(I am not a doctor or anything of the such, I am just going on my personal experience and what helped me)
It sounds like you might have chronic idiopathic urticaria ... specifically pressure induced urticaria. Have you been to an allergist or immunologist (i'm assuming you have) ... antihistimines are tricky to treat CIU, most don't work. I have found something that helps greatly. Monthly IVIG with daily reactine. Cyclosporine is another common option.
Post Edited (firemt) : 12/29/2008 11:14:44 AM (GMT-7)