Skin diseases A-Z

Acne

Acne is a skin condition characterized by pimples, blackheads, and sometimes inflammations. It mainly appears on the face, back, chest, and shoulders and is most common during adolescence, though it .......

Actinic Keratosis

Actinic keratosis, also known as sun damage, is a common skin condition caused by prolonged exposure to the sun. It is characterized by rough, scaly patches on the skin, usually on sun-damaged areas .......

Age spot

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Age spots

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Allergic Contact Dermatitis

Allergic contact dermatitis (also known as contact dermatitis) is a skin reaction caused by direct contact with certain substances. Symptoms range from redness, itching, swelling to blistering. The .......

Alopecia Areata

Alopecia Areata is an autoimmune disease that causes hair loss, attacking the hair follicles by the immune system. This results in hair loss on various parts of the body, mostly on the scalp. ....

Alopecia Cicatricialis

Alopecia cicatricialis, also known as scarring alopecia, is a rare form of hair loss where scar tissue damages the hair follicles, resulting in irreversible hair loss in affected areas. ....

Anal Fissure

An anal fissure, also known as an anal tear, is a small crack in the skin around the anus, which can cause pain and sometimes bleeding during and after bowel movements. ....

Andrews-Barber Syndrome

Andrews-Barber

Palmoplantar pustulosis (PPP), also known as Andrews-Barber, is a chronic skin condition characterized by the presence of pustules (pus-filled blisters) on the palms of the hands and soles of the .......

Androgenetic Alopecia

The most common form of hair loss in men and women, characterized by a gradual decrease in the quantity and quality of hair, usually caused by hereditary factors and hormonal changes. ....

Angioedema

Angioedema is a condition that causes swelling in the deeper layers of the skin and underlying tissue. It can occur in different parts of the body and sometimes lead to serious complications. ....

Angiokeratoma

Angiokeratoma is a benign skin condition that appears as small, dark red to purple bumps on the skin. They develop due to the dilation of small blood vessels and may have a rough or scaly texture. .......

Angioma Senilis

Angioma senilis, also known as cherry angioma, is a common skin condition that appears as small bright red to purple bumps on the skin. These bumps are actually small blood vessels that form on or .......

Anus issue

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Ashy Dermatosis (erythema dyschromicum perstans)

Ashy dermatosis, also known as erythema dyschromicum perstans, is a skin condition characterized by the appearance of gray to blue-gray patches on the skin. These patches are usually round or oval .......

Atheroma Cyst (Epidermoid Cyst)

An epidermoid cyst, also known as a sebaceous cyst, is a common skin condition that occurs when the opening of a sebaceous gland becomes clogged. Sebaceous glands produce sebum, an oily substance .......

Atopic Eczema

Constitutional Eczema

Atopic eczema, also known as constitutional eczema, is a common skin condition characterized by dry, itchy, and inflamed skin. It affects both children and adults and can impact various parts of the .......

Balanitis

Balanitis is an inflammation of the glans and foreskin of the penis, leading to discomfort, irritation, and pain. It is crucial to recognize the symptoms and seek timely medical help. ....

Balanitis Plasmocellularis

An inflammation of the glans and foreskin of the penis causing discomfort, irritation, and pain. ....

Bartholin’s Cyst

A Bartholin's cyst is a common benign swelling that occurs when one of the Bartholin glands, located on either side of the vaginal opening, becomes blocked. The cyst forms because the fluid normally .......

Basal Cell Carcinoma

Basal cell carcinoma is the most common form of skin cancer. It arises from the cells in the lowest layer of the epidermis. Basal cell carcinomas usually grow slowly and rarely metastasize to other .......

Becker’s Nevus

Becker's Nevus is a skin condition that results in a large, often darkly colored mole. It typically occurs in men and often develops during puberty. ....

Black Hairy Tongue

Black Hairy Tongue, also known as hairy tongue, is a harmless condition in which it appears as though small hairs are growing on the tongue. This is due to an overgrowth of .......

Blue Nevus

A blue nevus is a benign skin condition characterized by blue or bluish spots or bumps on the skin. ....

Borrelia

Lyme Disease, Tick-Borne Disease

Borrelia, also known as Lyme disease or tick-borne disease, is characterized by erythema chronicum migrans (ECM), a skin rash caused by an infection with the Borrelia burgdorferi bacterium, typically .......

Bowen’s Disease

Bowen's disease, also known as squamous cell carcinoma in situ, is an early form of skin cancer that develops in the top layer of the epidermis. It is characterized by abnormal growth of skin cells .......

Brachioradial Pruritus

Brachioradial pruritus is a skin condition that causes intense itching on the forearm, especially around the elbow area. This condition may be related to nerve irritation or damage. ....

Bullous Pemphigoid

A rare autoimmune disease that causes large, itchy, and painful blisters on the skin. ....

Burning Mouth Syndrome

Burning Mouth Syndrome is a condition where the affected person experiences a burning or tingling sensation in the mouth, often without a visible medical cause. ....

Café-au-lait Spots

Light brown or coffee-colored pigmentation marks on the skin, generally harmless and primarily a cosmetic concern. ....

Candida Intertrigo

Candidal Intertrigo is a common skin condition caused by a fungal infection in skin folds such as the armpits, groin, under the breasts, between the toes, and in the genital areas. It can cause .......

Canker Sores

Canker sores are small, painful ulcers in the mouth. They often appear white or yellowish with a red border around them and are sometimes called oral ulcers. They can occur on the gums, tongue, .......

Capillaritis

Capillaritis, also known as pigmented purpuric dermatosis, is a common skin condition characterized by inflammation of the small blood vessels in the skin. It can result in small red or purple spots .......

Cellulite

Cellulitis, also known as orange peel skin, is a skin condition where the skin develops a dimpled or lumpy texture. This occurs when fat cells under the skin press against the connective tissue, .......

Cellulite

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Chlamydia

Chlamydia is a common sexually transmitted infection (STI) caused by the Chlamydia trachomatis bacterium. It affects the mucous membranes of the genitals, urethra, anus, and sometimes the throat. .......

Chloasma

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Chondrodermatitis Nodularis Helicis

Chondrodermatitis Nodularis Helicis is a painful skin condition that occurs on the ear, typically at the top. It is characterized by the formation of small, painful nodules or ulcers on the skin of .......

Chronic Discoid Lupus Erythematosus (CDLE)

Chronic Discoid Lupus Erythematosus (CDLE) is a chronic autoimmune disease that affects the skin. It is characterized by red, scaly patches on the skin that often itch and can leave scars. CDLE can .......

Chronic Venous Insufficiency (CVI)

Chronic Venous Insufficiency (CVI) is a condition in which the veins in the legs have difficulty pumping blood back to the heart. Normally, veins return deoxygenated blood to the heart, but in CVI, .......

Clavus (Corn, Callus)

A clavus, also known as a corn or callus, is a thickening of the skin that usually occurs on the toes or other parts of the foot due to repeated pressure or friction. It is essentially a protective .......

Clown’s Eczema

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Cold Sore

Symptoms Burning or tingling sensation around the lips before blisters appear. Small blisters on and around the lips that may spread to the mouth and gum .......

Condylomata Acuminata (Genital Warts)

Genital warts, also known as condylomata acuminata, are a common sexually transmitted infection (STI). They are caused by the human papillomavirus (HPV) and can appear on the genital organs, anus, .......

Confetti Skin

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Constitutional Eczema

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Corticosteroids for the skin

Corticosteroids are adrenal cortex hormones and related drugs. They are used in creams and lotions for skin conditions to reduce inflammation, itching, and rapid cell division but do not address the .......

Couperose

Couperose is a skin condition where small blood vessels in the face dilate and become visible, causing red spots on the skin. It is most common on the cheeks, nose, forehead, and chin. ....

Cradle Cap

Cradle cap, also known as seborrheic dermatitis, is a common skin condition in newborns and infants, characterized by oily yellow scales on the scalp. This condition is harmless and usually does not .......

Creeping eruption

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Culicosis

Culicosis, also known as mosquito bite allergy, is an allergic reaction to a mosquito bite. This condition can cause mild to severe symptoms, .......

Cutaneous Horn

Cutaneous horn, also known as 'cornu cutaneum', is a rare skin condition characterized by a horn-like growth on the skin. This growth can occur anywhere on the body but is most common on exposed .......

Cutaneous Vasculitis (skin vasculitis)

Cutaneous vasculitis is a condition where inflammation of the blood vessels in the skin occurs. This inflammation can cause damage to the blood vessels, resulting in red or purple spots on the skin, .......

Dandruff

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Decubitus ulcers

Bedsores are serious skin damage caused by prolonged pressure and reduced blood flow to a specific area. They are common in people who remain in the same position for long periods and can lead to .......

Dehydrated Eczema

Dehydration eczema, also known as eczema craquelatum or asteatotic eczema, is a skin condition characterized by dry, flaky, and sometimes cracked skin. It primarily occurs when the skin becomes .......

Dermal nevus

Moles are benign accumulations of pigment cells in the skin. Almost everyone has moles, and they can vary in shape, color, and size. Some moles can change and pose a risk for skin cancer. ....

Dermatitis Herpetiformis

Dermatitis Herpetiformis, also known as Duhring's disease, is a rare chronic skin condition. It is characterized by the development of itchy, reddish blisters, mainly on the elbows, knees, buttocks, .......

Dermatosis Papulosa Nigra

Dermatosis Papulosa Nigra consists of small, dark, raised moles that commonly appear on the face and neck. They are typically about 1 mm in size and are very common among dark-skinned individuals. .......

Diabetes and the skin

Diabetes can cause various skin problems, which are often the first indicators of the disease itself. Common skin conditions associated with diabetes include bacterial infections, fungal infections, .......

Drug Reaction

A drug reaction is an unwanted response of the body to a medication. This can range from mild skin rashes to severe allergic reactions. Some reactions occur immediately, while others become visible .......

Dry Skin

Dry skin is a condition where the skin loses moisture and fats, leading to flakiness, redness, and itching. It is often seasonal but can also result from external factors like cold, wind, and .......

Duhring’s disease

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Dyshidrotic Eczema

Dyshidrotic eczema is a chronic skin condition characterized by small, itchy blisters on the palms of the hands, sides of the fingers, and soles of the feet. These blisters are often painful and can .......

Ectopic Sebaceous Glands (Fordyce Spots)

Fordyce spots, also known as Fordyce granules, are small, light or yellow raised spots that can form on the lips, inside the cheeks, and other parts of the body such as the genitals. They are .......

Edema due to other diseases

Edema is an accumulation of fluid in the body and can result from various underlying diseases. It occurs when there is an imbalance between the supply and drainage of fluid in the tissues. This can .......

Epidermolysis Bullosa Simplex

Epidermolysis Bullosa Simplex is an inherited condition where the skin is extremely vulnerable. Minimal friction or pressure can cause blisters, especially on hands and feet. ....

Erysipelas and Cellulitis

An infection in the skin, often recognizable by a red, swollen, and painful spot, usually on the leg or sometimes on the face. ....

Erythema Ab Igne

Erythema ab igne is a skin condition literally meaning "redness from fire", caused by prolonged exposure of the skin to a heat source. ....

Erythema Chronicum Migrans

Erythema Chronicum Migrans (ECM) is a skin rash caused by an infection with the bacterium Borrelia burgdorferi, transmitted by tick bites. It is the most characteristic symptom of the earliest stage .......

Erythema Exsudativum Multiforme

Erythema Exsudativum Multiforme, often abbreviated as EEM, is a skin condition characterized by reddish, target-like spots or bumps on the skin, sometimes with blisters. It can also affect mucous .......

Erythema Nodosum

Erythema nodosum is a skin condition characterized by painful red bumps, typically on the shins. It is the most common type of panniculitis, an inflammation of the subcutaneous fat. ....

Erythrasma

Erythrasma is a bacterial skin infection characterized by brownish or pink patches, often found in the armpits, groins, or under the breasts. The infection may itch or cause a burning sensation. ....

Erythromelanosis interfollicularis colli

On both sides of the neck, more or less symmetrically, a reddish-brown discoloration of the skin is observed, often with an irregular border. It may extend along the jawline to the cheeks. The .......

Excessive Hair Growth

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Flat warts

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Folliculitis

Folliculitis is a skin condition that occurs when hair follicles become inflamed. It may appear as small red bumps or pimples around the hair follicles, often accompanied by itching or irritation. It .......

Folliculitis Barbae

Folliculitis only in the beard area. ....

Folliculitis Decalvans

Folliculitis Decalvans is a rare skin condition where there is inflammation around the hair follicles, primarily on the scalp. This can lead to itching, pain, and even hair loss. ....

Foot fungus

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Frontal Fibrosing Alopecia (FFA)

Frontal fibrosing alopecia (FFA) is a form of alopecia characterized by slow progressive hair loss and scarring at the hairline at the front of the scalp. It is classified as a form of lichen .......

Fungal infection of the skin (mycosis, ringworm, tinea)

A fungal skin infection (mycosis, tinea) is a common skin condition caused by fungi or yeasts. These infections affect the outer layer of the skin and can take various forms, .......

Fungal infection on the scalp

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Genital herpes

Herpes is a common infection caused by the Herpes Simplex Virus (HSV). About two out of three people are infected with this virus, but not everyone develops symptoms. ....

Genital warts

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Granuloma Annulare

Granuloma annulare is a skin condition where small, firm bumps form ring-shaped patterns. The bumps are smooth, non-scaly, and red-brown or purple. They are not painful and usually do not itch. They .......

Grover’s Disease (transient acantholytic dermatosis)

Grover's disease is a skin condition characterized by the sudden appearance of red, itchy bumps on the skin, especially on the chest and back. This condition mostly occurs in middle-aged or older men .......

Haemangiomas

Haemangiomas are benign blood vessel growths that often appear on the skin. They are usually visible at birth or develop shortly thereafter. ....

Hailey-Hailey Disease

Hailey-Hailey disease, also known as familial benign pemphigus, is a rare skin condition. People with this disease suffer from blisters and skin irritations, especially in areas where the skin rubs .......

Halo Naevus

A Halo naevus, also known as a halo mole, is a skin condition where a mole (naevus) is surrounded by a light depigmented ring or 'halo'. ....

Hand Eczema

Hand eczema is a skin condition that causes inflammation of the skin on the hands. It can take various forms, each with unique characteristics. ....

Hand-foot-and-mouth disease

Hand-foot-and-mouth disease is a contagious viral illness that primarily affects children. It is characterized by blisters in the mouth and on the hands and feet. ....

Head lice

Head lice is a common parasitic infestation that primarily affects children. It is caused by small insects that feed on blood from the scalp and spread quickly through direct contact. Although head .......

Hemangiomas

Hemangiomas are benign (non-cancerous) vascular growths that often appear on the skin. They are usually visible at birth or develop shortly .......

Hemorrhoids

Hemorrhoids are swollen blood vessels in the rectum and anus that can cause discomfort and pain. This condition is common and can be caused by various factors, such as prolonged straining during .......

Herpes Simplex

Herpes simplex is a common viral infection caused by the herpes simplex virus (HSV). There are two types: HSV-1, which usually causes cold sores around the mouth, and HSV-2, which primarily causes .......

Herpes Zoster

Shingles is a skin disease that causes itching, pain, and a rash with blisters, usually on one side of your body. It is caused by the same virus that causes chickenpox. If you have had chickenpox, .......

Hidradenitis Suppurativa

Hidradenitis Suppurativa (HS), also known as Acne Inversa, is a chronic inflammatory skin disease. It primarily affects areas with hair follicles and sweat glands, such as the armpits, groin, .......

Hirsutism

Excessive hair growth

Hirsutism is a condition where women experience excessive dark, coarse hair growing on areas like the upper lip, chin, chest, back, stomach, and thighs, resembling male hair growth patterns. It is .......

Histiocytoma (Dermatofibroma)

A dermatofibroma, also known as histiocytoma, is a common benign skin tumor. It occurs more frequently in adults, particularly women. Dermatofibromas can appear on any part of the body but are most .......

Hives

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Hormone creams

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Hyperhidrosis

Hyperhidrosis is a medical condition where a person sweats more than normal, often without a clear reason. It can occur in various parts of the body, such as the hands, feet, armpits, or face. While .......

Hypomelanosis Guttate Idiopathic

Idiopathic guttate hypomelanosis is a skin condition characterized by small, round or oval, white spots on the skin. These spots are typically 1-10 mm in size and often appear on the arms, legs, and .......

Hypostatic Eczema

Hypostatic eczema, or stasis dermatitis, is a skin condition that mainly affects the lower legs and is caused by poor blood circulation. It frequently occurs in people with chronic venous .......

Ichthyosis

Ichthyosis is a group of skin disorders where the skin becomes dry, thickened, and scaly, resembling fish scales. Severity can range from mild to severe. ....

Idiopathic Guttate Hypomelanosis

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Impetigo

Impetigo is a common and contagious skin infection, especially in children. It causes red spots, blisters, and crusts, usually on the face, hands, and feet. ....

Insect bites

Insect bites are also referred to by specialists as culicosis. This intensely itchy skin condition is caused by the bites of insects on the skin. These can be mosquitoes as well as other biting and .......

Intertrigo (skin fold rash)

Intertrigo is a skin condition where irritation occurs in areas where skin rubs against skin, such as under the breasts, in the groin, or between skin folds. This irritation can lead to redness, .......

Itching

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Itching around the anus

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Jessner’s Disease

Jessner's disease is a rare skin condition characterized by chronic, red inflamed patches on the skin, usually affecting the face, neck, and back. These patches may be itchy or painful. ....

Juvenile Plantar Dermatosis

Juvenile Plantar Dermatosis is a skin condition that mostly affects children and young teenagers. It is characterized by dry, flaky, and sometimes painful skin on the soles of the feet. ....

Juvenile Spring Eruption

Juvenile Spring Eruption is a skin condition that primarily affects boys and young men. It is characterized by a rash on the ears, typically occurring in spring. ....

Juvenile Xanthogranuloma

Juvenile xanthogranuloma (JXG) is a rare, benign skin condition that primarily affects children. It is characterized by small, firm, red-yellow bumps on the skin, usually painless and non-itchy. ....

Keratoacanthoma

Strongly resembles squamous cell carcinoma but is benign. Within a few weeks, a tumor of 1 to 2 centimeters develops, round in shape with a central keratin plug. It disappears spontaneously within a .......

Keratosis Pilaris

Keratosis pilaris is a common, harmless skin condition caused by an abnormal maturation of keratin cells in the hair follicles. Keratosis pilaris usually develops during childhood and can occur in .......

Larva Migrans

Creeper worm

Larva migrans, also known as creeping eruption, is a skin infection caused by roundworm larvae that crawl under the skin. This leads to an itchy, serpentine rash, usually on the feet or legs. The .......

Leg Edema

Leg edema is a condition in which there is abnormal accumulation of fluid in the tissues of the legs. This can lead to swelling, pain and discomfort. ....

Lentigo

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Lentigo Maligna Melanoma

Lentigo maligna melanoma is a type of skin cancer that develops from a long-standing lentigo maligna, a precursor to melanoma. It mainly appears on skin that has been frequently exposed to the sun, .......

Lentigo solaris

There is one round brown spot (or a few), often on the cheek, temple, or forehead. The spots are uniformly brown and may slowly enlarge. There is no scaling. It is benign. ....

Leukoplakia

Leukoplakia is a condition in which white, thickened patches develop on the oral mucosa, tongue, or gums. These patches cannot be wiped away and usually result from irritation or prolonged .......

Lichen Planus

Lichen planus, also known as "lichen ruber planus," is a chronic, itchy inflammatory disease of the skin and mucous membranes. The term "lichen ruber planus" literally means "hardened red flat .......

Lichen Sclerosus

Lichen sclerosus is a chronic skin condition that mainly affects the genitals, with white, itchy and thinning skin. It can cause discomfort or pain. ....

Lichen Simplex (Neurodermatitis)

Neurodermatitis, also known as lichen simplex, is a skin condition characterized by chronically itchy, inflamed areas on the skin with thickening of the skin. This condition is not contagious. .......

Lip licker’s dermatitis

liplicking eczema

It is a chronic irritation of the skin around the lips. It occurs when the tongue and saliva are constantly used to wet the lips. The saliva damages the skin, which then becomes irritated. The skin .......

Lipoma

A lipoma is a benign fatty lump that forms under the skin. It consists of fat cells and usually feels soft and movable. Lipomas grow slowly and typically do not cause pain or .......

Liver spot

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Localized scleroderma

What is morphea? Morphea (syn.: localized scleroderma) is a patchy, chronic inflammation of the dermis where the elastic connective tissue of the skin is affected. This causes the skin to .......

Lyme Disease

Lyme disease is an infectious illness caused by the Borrelia burgdorferi bacteria, typically transmitted through tick bites. One of the earliest signs is erythema chronicum migrans, a red, ring-like .......

Lymphedema

Lymphedema is a condition where lymph fluid accumulates in tissues, leading to swelling, typically in the arms or legs. This occurs due to a damaged or inadequately functioning lymphatic .......

Lymphomatoid Papulosis

This is a very rare chronic skin condition that can persist for many years. It is a benign disorder, but under pathological examination, it may resemble malignant lymphoma, a rare form of blood .......

Marisken (anal skin tags

Anal skin tags, also known as marisken, are small, soft skin flaps or protrusions around the anus. These are typically painless and non-cancerous. ....

Melanoma

Melanoma is an aggressive form of skin cancer that develops from pigment-producing cells (melanocytes). It often begins as a changing mole or a newly formed, irregularly colored spot on the skin. .......

Melasma

Melasma is a skin condition where brown or gray patches appear on the skin, typically on the face. It occurs more frequently in women than in men, especially during pregnancy. ....

Milia (Milk Spots)

Milia, also known as milk spots, are small, hard, white bumps that often appear on the face. They are completely harmless and do not cause any pain. ....

Moles

Moles (naevus naevocellularis) are benign accumulations of pigment cells in the skin. They can be flat or raised and vary in color from light brown to black. Most people have multiple moles, which .......

Mollusca Contagiosa (Water Warts)

Water Warts

Mollusca Contagiosa, a skin infection caused by the molluscum contagiosum virus, is commonly seen in children but can also affect adults. ....

Morphea

Morphea, also known as localized scleroderma, is a rare skin condition that leads to hardening and thickening of the skin and the underlying tissue. It is a non-contagious condition that varies in .......

Mosquito bite

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Mucoid cyst

A mucoid cyst, also known as a mucous cyst or digital mucoid cyst, is a benign, fluid-filled lump that typically appears on the fingers or toes, often near a nail. The cyst forms due to an .......

Mucoid Cyst

Symptoms A mucoid cyst is a small, fluid- or gel-filled swelling that often occurs in the fingers or toes near a joint. These cysts are non-cancerous. Symptoms may .......

Nail abnormalities

Dermatological nail abnormalities are changes in the structure, color, thickness, or growth of the nails caused by skin conditions, infections, injuries, or systemic diseases. These .......

Necrobiosis Lipoidica

Necrobiosis lipoidica is a rare skin condition, often associated with diabetes. It is characterized by thin, inflamed skin patches, mainly on the lower legs. ....

Neurofibroma

A neurofibroma is a benign nerve tumor that arises from the supporting cells of nerves. They can occur on their own or be part of the genetic disorder neurofibromatosis type 1 (NF1). ....

Nummular eczema

People with eczema experience itchy, red skin with visible scales. Eczema results from a superficial inflammatory reaction in the skin. With nummular eczema, you develop round patches on the skin .......

Onychomycosis

Fungal Nail Infection

Onychomycosis, better known as nail fungus, is a common fungal infection that affects the nails. It causes discoloration, thickening, and brittleness of the nail. Without .......

Open leg (venous leg ulcer)

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Orange peel skin

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Otitis Externa

Otitis externa, also known as swimmer's ear, is an inflammation of the ear canal. The condition is usually caused by a bacterial or fungal infection and often occurs after exposure to water, .......

Palmoplantar Keratosis (PPK)

Palmoplantar keratosis (PPK) is a skin condition characterized by thickening of the skin on the palms and soles. It occurs due to excessive production of keratin, a protein that protects the skin. .......

Parapemphigus

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Parapsoriasis

Chronic Superficial Scaly Dermatitis

Parapsoriasis is a rare skin disease that usually manifests as spots or patches on the skin that resemble psoriasis but are less intense. It is characterized by patches that can sometimes be scaly or .......

Pearly Penile Papules

Pearly Penile Papules (PPP) are small, skin-colored to white, pearl-like bumps that appear in one or more rows around the edge of the glans. They are completely benign, non-contagious, and commonly .......

Pemphigus

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Pemphigus Vulgaris

Pemphigus vulgaris is a rare autoimmune disease that causes blisters on the skin and mucous membranes. The immune system, which normally protects the body from disease, accidentally attacks healthy .......

Peri-anal Thrombosis

Peri-anal thrombosis, also known as a thrombosed hemorrhoid, is a sudden swelling near the anus caused by a blood clot in an external blood vessel. This results in a hard, bluish or purple lump that .......

Perianal Eczema

Perianal eczema is a skin condition that occurs around the anus. It causes itching, redness, and sometimes a burning sensation or discharge. This condition affects both adults .......

Perioral Dermatitis

Perioral dermatitis is an inflammatory skin reaction that primarily occurs around the mouth and sometimes the eyes. It is characterized by red, scaly spots and sometimes small blisters or pimples. .......

Perioral Dermatitis

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Perleche (Angular Cheilitis)

Perlèche, also known as angular cheilitis, is an inflammation of the corners of the mouth. The condition causes painful, red, cracked, or scaly areas in the corners of the mouth, sometimes with .......

Perniones (Chilblains)

Perniones, also known as chilblains or pernio, is a condition in which the skin reacts abnormally to cold and humid conditions. Due to impaired blood circulation in the small blood vessels, painful, .......

Pitted Keratolysis (sweaty feet)

Pitted keratolysis is a superficial infection of the stratum corneum on the soles of the feet, particularly in pressure areas where the callus layer is thick. The infection is usually associated with .......

Pityriasis Alba

There are indistinctly bordered white round patches (1-5 cm), with very light scaling, especially on the face on the cheeks, sometimes on the arms and torso. The spots occur in the summer and often .......

Pityriasis Amiantacea

It can be seen as an intensified form of dandruff, where the scaling no longer easily detaches. As a result, the layer of scales becomes thicker and thicker, until there is a thick layer of white .......

Pityriasis Capitis

Dandruff, also known as pityriasis capitis, is a common skin condition characterized by the shedding of small pieces of dead skin from the scalp. This often results in visible flakes in the hair and .......

Pityriasis Rosea

It usually starts with one clear red spot with scaling, often on the torso. Then there is a rapid expansion with dozens of itchy and scaling spots, primarily on the torso, upper arms, and upper .......

Pityriasis Rubra Pilaris

In PRP, red, inflamed patches of skin develop that can cover fairly large areas. The patches are sharply demarcated from the normal skin. The skin around the hair follicles is most affected, often .......

Pityriasis Versicolor

The patches are primarily located on the upper part of the torso, shoulder girdle, neck, and sometimes upper arms. The size of the patches is usually 1-2 cm, but when numerous, they can merge into .......

Pityrosporon Folliculitis

Pityrosporon Folliculitis, also known as Malassezia folliculitis, is a skin condition caused by an overgrowth of yeast (Malassezia) that is naturally present on the skin. This yeast settles in the .......

Poikiloderma Civatte (confetti skin, sun neck)

Poikiloderma Civatte is a skin condition that mainly occurs in adults. It is characterized by a combination of redness, brown spots, and thin blood vessels on the face and neck. This condition .......

Porokeratosis

Porokeratosis is a group of rare skin disorders characterized by abnormal keratinization (cornification). The condition results in the formation of scaly, ring-shaped patches on the skin with a .......

Porphyria Cutanea Tarda

Itchy blisters and vesicles on the backs of the hands that appear after sun or UV exposure. Therefore, it is particularly bothersome in the summer. ....

Post-Inflammatory Hyperpigmentation

Post-inflammatory hyperpigmentation is a skin condition that appears as discoloration or darkening of the skin following an inflammatory event, such as acne, eczema, or skin injury. It results from .......

Pregnancy Mask

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Pressure ulcers

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Proctalgia Fugax

Regularly recurring temporary, intense pain around and in the anus and pelvic floor. The pain is often difficult to pinpoint, can be very severe, and can last up to 30 minutes. It is caused by a .......

Progressive Macular Hypomelanosis

Progressive Macular Hypomelanosis is a skin condition characterized by the gradual development of small, light-colored spots on the skin. These spots are usually round or oval and are most commonly .......

Prurigo Nodularis

Prurigo nodularis is a skin condition characterized by intensely itchy nodules on the arms and legs. This condition usually occurs in adulthood and can persist for a very long time. ....

Pruritus (Itching)

Pruritus is the medical term for itching, an unpleasant sensation that prompts scratching. Itching can range from mildly annoying to severely disruptive and can significantly affect the quality of .......

Pruritus Ani

anal itching

Pruritus ani literally means itching of the anus. The itching can persist throughout the day and be particularly bothersome at night. Usually, there are few visible skin changes at the site. The .......

Pseudoacanthosis Nigricans

Pseudoacanthosis nigricans is a skin condition where dark, velvety discolorations appear in the folds and creases of the body. This condition is often seen in areas such as the neck, armpits, and .......

Psoriasis

Psoriasis is a non-contagious skin condition characterized by red and scaly patches that can appear all over the body. This condition often runs in families. While treatment can significantly improve .......

Pubic lice

Pubic lice (crabs) are annoying but harmless parasites that are usually transmitted through physical contact. You can also contract them by sharing contaminated clothing, bedding, or towels, for .......

PUPPP

Pruritic Urticarial Papules and Plaques of Pregnancy

This is the most common form of rash during pregnancy. About 1 in 250 pregnant women are affected by it. It involves the development of an itchy red rash in the last three months of pregnancy, .......

Pyogenic Granuloma (Telangiectaticum)

Pyogenic granuloma, also known as pyogenic granuloma, is a small, usually red bump that can appear on your skin or sometimes on your mucous membranes. This bump bleeds easily and looks like a raw .......

Raynaud’s Disease

There is a color change in the fingers that usually progresses in three distinct phases. Initially, there is a pallor due to the narrowing of the arteries. One or more fingers then appear truly .......

Relapsing Polychondritis

Relapsing polychondritis is a chronic inflammatory condition that primarily attacks cartilage. It can lead to painful swelling and deterioration of cartilage in various parts of the body, including .......

Ringworm (Dermatomycosis, tinea)

With ringworm, there is usually only one affected area that is clearly defined, which slowly enlarges to a diameter of 10 cm or more. The skin is somewhat thickened and flakes, especially at the edge .......

Rosacea

Rosacea is a common chronic facial skin condition. It usually begins around the age of 30. Eye abnormalities are common with rosacea and can range from mild to severe. Rosacea is treatable but not .......

Scabies

Scabies is a contagious skin disease caused by the scabies mite. The condition is intensely itchy, especially at night. Scabies is an annoying but not serious disease. It is well treatable. It is .......

School sores

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Sebaceous cyst

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Sebaceous Hyperplasia

Sebaceous hyperplasia is a skin condition in which the sebaceous glands, which produce natural oils (sebum) to hydrate the skin, are enlarged. This can lead to the appearance of small, often yellow .......

Seborrheic Dermatitis

There are localized, moderately well-defined scaly red patches. The scales are somewhat oily and are coarser than those seen in psoriasis. The scaly patches usually occur between the eyebrows and on .......

Seborrheic keratosis

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Seborrheic verruca

Seborrheic verruca, also known as age spots, are benign skin growths that often appear in middle-aged and older people. They resemble moles but are rougher and brownish in .......

Seborrhoeic Keratosis (Age Warts)

Seborrhoeic keratosis, also known as age spots, are benign skin growths that often appear in middle-aged and older people. They resemble moles but are rougher and brownish in color. Commonly found on .......

Senile Angiomas (Cherry Angiomas)

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Senile Hemangiomas

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Senile Hematomas

Senile hematomas, also known as actinic purpura, are blue or purple bruises that occur on the skin of older adults, usually due to minimal trauma. This condition frequently appears on the forearms .......

Shingles

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Skin

The skin is the largest organ of the human body and serves as a protective barrier against the outside world. It has an area of 1.5 to 2.0 square meters and weighs between 15 and 20 kilograms. The .......

Skin cancer

Skin cancer is a malignant growth of skin cells. It is becoming more common, especially as people have become less cautious about sun protection since the 1960s. The UV rays from the sun and tanning .......

Skin Fibroma

Skin fibromas are soft, small growths on the skin. They are usually not painful and benign. ....

Skin tag

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Spider Naevus

Spider Vein

A spider naevus (spider angioma, naevus araneus) is a common benign vascular lesion in the skin. Spider naevi are often seen in children and young adults. ....

Springtime rash

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Squamous Cell Carcinoma of the Skin

Squamous cell carcinoma of the skin is a type of skin cancer that originates from squamous cells, the thin, flat cells that are part of the outermost layer of the skin, the epidermis. It is the .......

Strawberry-hemangioma

port-wine stain

A hemangioma is a benign red or purple tumor of blood vessels in the skin. It typically appears shortly after birth and grows rapidly through cell proliferation. Over time, it gradually becomes .......

Stretch marks during pregnancy

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Striae

Stretch marks

Stretch marks (Striae) are elongated streaks or scars on the skin that develop due to rapid stretching of the skin. This often occurs during pregnancy, puberty, weight gain, or rapid muscle growth. .......

Stucco Keratoses

Stucco keratoses are small, rough, skin-colored or whitish growths that typically appear on the ankles, feet, and lower legs. They are benign and pose no health risk but can sometimes be cosmetically .......

Sun allergy

In polymorphic light eruption, itchy bumps, blisters, or excessive redness and swelling typically appear in early spring (with the first sun exposure) on sun-exposed areas such as the arms and face. .......

Sun and skin

Much has been said and written about sunlight and sunbathing, the use of tanning beds, and sunscreen products (also known as sunblock or sun lotion). This article addresses several frequently asked .......

Sweaty feet

Sweaty feet (medical term: hyperhidrosis plantaris) is a condition where the feet sweat excessively, often accompanied by an unpleasant odor. This occurs because sweat glands .......

Syphilis (Lues)

Syphilis is a bacterial infection caused by the bacterium Treponema pallidum. It is primarily transmitted through sexual contact, including oral and anal sex, and can also be passed from mother to .......

Syringoma

Syringomas are small, benign (non-cancerous) tumors that primarily originate from sweat glands. They appear as small, translucent or flesh-colored bumps and often occur on the lower eyelid, upper .......

Telangiectatic granuloma

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Telogen Effluvium

Telogen effluvium is a temporary form of hair loss that occurs after stress, a shock to the system, or a traumatic event. It is characterized by an accelerated transition of hair follicles from the .......

Tinea Amiantacea

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Tinea Captitis

Tinea Capitis is a fungal infection of the scalp. This condition is also known as scalp ringworm and primarily affects children. It is caused by a fungus that infects the skin and hair follicles, .......

Tinea Pedis

In the early stages of a fungal infection on the feet, there is often just one sharply defined, itchy spot on the sole, with blisters and flaking, which gradually enlarges. (In some cases, there can .......

Toxicodermia (drug eruption)

Toxicodermia refers to skin reactions that occur as a result of an allergic reaction to medications, chemicals, or other substances. This condition is also known as drug eruption and can range from .......

Traction Alopecia

Traction alopecia is a form of hair loss that occurs as a result of mechanical stress on the hair due to tight hairstyles that pull the hair tightly over time. This can lead to damage to the hair .......

Transient acantholytic dermatosis

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Urticaria

Urticaria, also known as hives, is a common skin condition characterized by red, itchy welts or swellings on the skin. These can occur anywhere on the body and usually disappear on their own within .......

Urticaria Pigmentosa

Small (1-3 mm) red or red-brown spots scattered across the entire body. Usually causes no symptoms. They may become redder, swell, and itch when rubbed. ....

Varices

Varicose veins

Varicose veins (varices) are common abnormalities of the veins, more frequently occurring in women than in men. They are one of the most common reasons people visit their doctor. However, only a .......

Varicose veins

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Vasculitis

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Venous leg ulcer

A leg ulcer (ulcus cruris) is a chronic, poorly healing wound on the lower leg. It usually occurs due to circulatory problems, which prevent the skin and underlying tissue from receiving enough .......

Verruca Vulgaris

Verruca Vulgaris, also known as a common wart, is a skin infection caused by the human papillomavirus (HPV). These warts typically appear on the hands, fingers, and around the nails, but can also .......

Verrucae plana

Verrucae plana, or flat warts, are small, flat, slightly raised warts that typically appear on the face, hands, and legs. They are caused by an infection with the human papillomavirus (HPV) and are .......

Viral Exanthem

Viral exanthem is a skin rash that often occurs in response to a viral infection. It can appear as red spots, bumps, or blisters across large areas of the body. This rash is usually a direct result .......

Vitiligo

Vitiligo is a skin condition where white patches appear due to the destruction of melanocytes, the cells responsible for producing melanin, the pigment that gives color to the skin, hair, and eyes. .......

Warts

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Wound dandruff

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Xanthelasmata

Yellow, raised, sharply defined spots, often somewhat elongated, located on the upper and lower eyelids. ....

Xeroderma

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