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 disappear on their own in the winter. The following summer, they may return. Pityriasis alba usually causes no symptoms, at most some mild itching.
Symptoms
Pityriasis Alba is characterized by round or oval light-colored, slightly scaly patches usually found in children and teenagers. The patches are noticeably lighter than the surrounding skin, can have a fine, dry texture, and often become more apparent after sun exposure.
Causes
The exact cause of Pityriasis Alba is unknown, but the condition is associated with dry skin and is more common among individuals with eczema or asthma. Factors such as sun exposure, skin irritation, and genetics may play a role.
Diagnosis
Diagnosis is typically based on the characteristic patches. Sometimes, a skin biopsy or other tests may be necessary to rule out other conditions.
Treatment
Pityriasis Alba is often mild and usually resolves on its own. If needed, moisturizing creams and mild steroid creams can help alleviate symptoms of dry, irritated skin.
Self-care tips
- Hydrate the skin daily, especially after bathing.
- Use gentle, moisturizing soaps or soap-free cleansers.
- Protect the skin from the sun with clothing or broad-spectrum sunscreen.
- Avoid prolonged sun exposure.
Links: Find even more information at the following websites.
English
- DermNet NZ on Pityriasis Alba
- British Association of Dermatologists on Pityriasis Alba
- Skinsight on Pityriasis Alba
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