L50.3: Dermatographic urticaria
Your skin has probably been itchy. So you have scratched it. The rash usually appears where the scratch marks are.
The symptoms can vary in their severity. Certain areas of the skin usually swell up. These areas are often very itchy and red. The symptoms are similar to those that come from contact with stinging nettles.
The rash usually fades away again after a short time.
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