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Dermatographia is a condition in which lightly scratching your skin causes raised, inflamed lines or welts. These marks tend to go away in less than 30 minutes. The condition is also known as dermatographism and skin writing.
The cause of dermatographia is unknown, but it may be related to an infection, emotional upset or a medicine you're taking.
Dermatographia is harmless. Most people who have this condition don't need treatment. If your symptoms bother you, talk...
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Symptoms of dermatographia may include:
The symptoms may occur within a few minutes of the skin being rubbed or scratched. They tend to go away within 30 minutes. Rarely, the skin symptoms develop more slowly and lasts several hours to days. The condition itself can last for mon...
The exact cause of dermatographia isn't clear. It may be an allergic reaction, though no specific allergen has been found.
Simple things may cause symptoms of dermatographia. For example, rubbing from your clothes or bedsheets may irritate your skin. In some people, the symptoms are preceded by an infection, emotional stress, vibration, cold exposure or taking a medicine.
Treatment for dermatographia often isn't needed, as symptoms tend to clear up on their own. But if your symptoms are bad or bother you, your health care provider may suggest a mild antihistamine medicine taken by mouth. These are sold at drugstores. First try a type doesn't cause drowsiness, such as fexofenadine (Allegra), loratadine (Alavert, Claritin, others) or cetirizine. If none of these help, your health care provider may prescribe a stronger medicine for use at bedtime. An example is doxepin....
Try these tips to reduce discomfort and prevent the symptoms of dermatographia:
For informational purposes only and not a substitute for professional medical advice, diagnosis, or treatment.
© Mayo Clinic
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