Topamax was only ever approved for seizures. Here’s the list of conditions J&J actually promoted it for, according to the whistleblower who brought the case:

alcohol dependence
essential tremor
diabetic neuropathic pain
post traumatic stress disorder
Tourette’s syndrome
obsessive compulsive disorder
obesity
type 2 diabetes
bulimia and binge eating

The Tourette’s “study” J&J used to persuade docs had only two patients in it. The PTSD study had 34 patients — far too few to be statistically significant. (For a drug that carries a risk of bindness through glaucoma.)