Causes
The underlying cause of dermographism is not known, and can last for many years without relief. Ninety-five percent of chronic cases are never solved. Increased incidence has been observed following prolonged exposure to microwaves. Sometimes the condition goes away, sometimes it stays forever. It is not a life-threatening disease and is not contagious.
Symptoms can be induced by periods of stress, tight or abrasive clothing, watches, glasses, heat, cold, or anything that causes stress to the skin or the patient. In many cases, it is a great annoyance, effecting shame and embarrassment upon sufferers. Symptoms may impact a patient's life.
Read more about this topic: Dermatographic Urticaria