Toxicodermia (drug eruption)

Symptoms

The symptoms of toxicodermia can vary depending on the severity and type of reaction but usually include:

• Rash, redness, and itching.
• Blisters or vesicles, especially if the reaction is severe.
• Peeling or flaking of the skin in prolonged reactions.
• In severe cases, there may be swelling, pain, or skin detachment. These symptoms can appear a few days to weeks after exposure to the causative substance.

Causes

Toxicodermia is usually caused by an allergic reaction to medications. The most common culprits include:

• Antibiotics, such as penicillins and sulfonamides.
• Non-steroidal anti-inflammatory drugs (NSAIDs).
• Anticonvulsants.
• Certain chemicals and preservatives. Genetic factors may also play a role in a person’s sensitivity to certain substances.

Diagnosis

The diagnosis of toxicodermia is generally made based on medical history and clinical findings. The doctor will ask about recent use of medications or exposure to known allergens. Skin tests or blood tests may be performed to identify specific allergies.

Treatment

The treatment for toxicodermia includes:

• Immediate discontinuation of the suspected drug or substance.
• Administration of corticosteroids to reduce inflammation and itching.
• Antihistamines may also be used to control itching.
• In severe cases, hospitalization may be necessary to monitor and support vital functions.

Self-Care

• Avoid known allergens: Once you know you are allergic to a certain drug or substance, strictly avoid it.
• Skin care: Use mild soap and moisturizers to soothe the skin.
• Cool and cover the skin: Cool compresses can help reduce itching and inflammation.
• Wear comfortable clothing: Loose, soft clothing can prevent skin irritation.