Does anyone else have this... "Dermatographia is a condition in which lightly scratching your skin causes raised, red lines where you've scratched. Though not serious, it can be uncomfortable. Dermatographia is a condition also known as skin writing."
"Dermatographism (Dermatographia) About 2 % to 5% of the population is affected by dermatographism, also called dermatographia or skin writing. This condition, which is not dangerous, causes welts when skin is scratched, rubbed, or otherwise exposed to pressure."
(the third one is mine)