I keep getting these extremely itchy welts on my back. Went to a dermatologist and she had no clue what it was, thought it was a cyst, wrong! Its an allergic reaction I'm having to a new Tempur-pedic mattress I received 6 months ago. I replaced my old Tempur-pedic from 2003 for this new one. Ever since I replaced the mattress I've been getting these welts that itch really bad. I haven't tried to contact the company yet, but I will. Has anyone with the same issue just tried putting a mattress cover over the top of the mattress?