Dermatographic urticaria

Dermatographic urticaria (also known as dermographism, dermatographia, or skin writing) is a skin condition characterized by the appearance of weals or welts on the skin as a response to scratching or firm stroking of the skin. It is the most common form of physical urticaria.

Symptoms[edit | edit source]

The main symptom of dermatographic urticaria is the rapid onset of raised red skin welts. These welts can appear anywhere on the body and can be triggered by a light scratch or pressure. They usually disappear within 30 minutes. Other symptoms can include itching, a burning sensation, and rarely, angioedema.

Causes[edit | edit source]

The exact cause of dermatographic urticaria is unknown. It is thought to be caused by an overactive immune response to a stimulus such as pressure or scratching. Some people may have a genetic predisposition to the condition. Certain factors can exacerbate symptoms, including stress, hot baths, alcohol, exercise, and certain medications.

Diagnosis[edit | edit source]

Diagnosis of dermatographic urticaria is usually based on the characteristic appearance of the welts. A doctor may also perform a skin writing test, where they lightly scratch the skin with a blunt object and observe the reaction.

Treatment[edit | edit source]

Treatment for dermatographic urticaria primarily involves avoiding triggers and managing symptoms. This can include avoiding scratching, wearing loose clothing, and using over-the-counter antihistamines. In severe cases, a doctor may prescribe stronger antihistamines or other medications.

References[edit | edit source]

Dermatographic urticaria Resources
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