Are you on any other medications that could be causing the hair loss? I too haven't heard of antihistamines causing hair loss but if you have an over active immune system then maybe your body is just out of whack. Do you take a multivitamin? How about a supplement for hair, skin and nails? But I agree that you should bring this up to your doctor.
~Uc(Left-sided) since 1992 - Meds - Colazal, 6MP, Biotin, Forvia, Canasa every other day for maintanence~
~Secondary Raynauds Syndrome since 2004-Meds-Norvasc..Fibromyalgia since 2006, Acid Reflux - Prilosec OTC~
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@--->--Co-mod for Ulcerative Colitis...Moderator for Allergies/Asthma--<---@