I take Topimax & occasionally experience nonstop tingling/numbness in my hands if I didn't increase my water intake the day before, but the benefits far outweigh these side effects in terms of eradicating horrific daily tension headaches for me personally. I recently started taking OTC potassium supplements right when the tingling starts (along with chugging tons of H2O), and it's really helped cut these episodes short!

Have your Cervical and Thoracic spine checked. I have the arm and hand issues from both Cervical and Thoracic Spondylosis

My experience has been the only relief is to use a heating pad and warm my hands. Most of the time that will help. Wish I had more to offer.

Do you take topomax for migraines? Side effect numbness in feet and hands. Or could be a nerve that can effect you.

All the time,make sure you tske the the nerve medication.