Has anybody else been diagnosed with dermographism? Do you still have it, or has it gone away? If it went away, how long did you have it for? Were you given a prescription for anti-histamines hydroxyzine and allegra? Do you know if there are any harmful side-effects of longterm use of either medicine?

I've had the condition for five years and have been on and off anti-histamines over time. I usually go between 4 and 6 months taking hydroxyzine and allegra daily. I wonder if it's bad to be taking the medicines for such a long amount of time? My dermatologist never said anything about it. Everytime I go back, I get diagnosed with the same thing and prescribed the same medicines.

Summarized question: Where can I find more information on Dermatographism, including side effects of anti-histamines hydroxyzine and allegra drug?