i'm sorry this is happening to you! the reason why you weren't told about this as a side effect is that it's so rare as to be unknown. i just read off the list of side effects for topamax (topiramate) and hair lost wasn't listed. so the doctor and pharmacist wouldn't have had any way to know. your hair loss might be a rare side effect but it might have another cause too so ask your doctor to help you check for causes. here's some more information if you want to read further. <link>#side-effects
hair loss and topamax? why wasn't i warned of this? . i took the drug topamax for migraines my hair has been falling out and is very thin? i finally stopped taking it but am outraged that i wasn't ever told of this side effect and am terrified that my hair will both not stop falling out and never return! i am currently taking g biotin and going to start nioxin. it's embarrassing and horrifying.