--in my research over the years, I have not seen Keppra mentioned as having side effects that feel like neuropathy--that is, burning, parastheses, and the like--but I have seen that mentioned with Topamax, and not only in anecdotal reports:

Side Effects of Topamax (Topiramate), Warnings, Uses

Topamax - Weight Loss, Migraine Treatment, & Other Uses


As anticonvulsants go, Topamax is one of the weirder ones; it's side effect profile differs from man of the other drugs in that class, including being associated with weight loss rather than weight gain as most of the others are.

It may behoove you to have a good long consultation with your epileptologist as regards possible other drug combinations that can be tried.