What is it?

Dermatographia, or skin writing, is a skin condition in which minor scratches turn into a significant reaction, similar to hives, and then disappear within 30 minutes. The scratches worsen, become red and itchy, and cause deep wounds. It is more common in children or young adults. The cause for this condition is yet unknown but it seems to be an allergic response. In some, it is triggered by infections,certain medications, stress, allergy history, excessive rubbing from clothing or bedding and some styles of exercise. Risk factors include other skin conditions such as dermatitis or a tendency to dry skin.