Dermatographism, also known as dermagraphism, simply translates “writing on the skin”. It is a very common localized hive reaction, affecting approximately 2-5% of the general population.

This condition is characterized by the abrupt onset of welts and hives where the skin is exposed to pressure, scratching, itching or stroking.

Dermatographism is frequently diagnosed incidentally, especially in relation to other skin disorders like eczema.