Dermatographic urticaria
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| Dermatographic urticaria | |
|---|---|
| Synonyms | Dermographism, dermatographism, skin writing |
| Pronounce | N/A |
| Specialty | Dermatology |
| Symptoms | Raised, red lines on skin after pressure |
| Complications | N/A |
| Onset | Any age, commonly in young adults |
| Duration | Varies, can be chronic |
| Types | N/A |
| Causes | Unknown, possibly immune system response |
| Risks | Stress, infection, allergy |
| Diagnosis | Clinical examination, "skin writing" test |
| Differential diagnosis | Urticaria, allergic reaction, contact dermatitis |
| Prevention | N/A |
| Treatment | Antihistamines, avoiding triggers |
| Medication | Cetirizine, Loratadine, Fexofenadine |
| Prognosis | N/A |
| Frequency | Common, affects 2-5% of the population |
| Deaths | N/A |
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]
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]
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]
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]
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.
See also[edit]
References[edit]
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