Medically reviewed by Theresa Marko, PT, DPT, MS Ulnar nerve entrapment occurs when there is too much pressure on the ulnar nerve. This leads to hand numbness or tingling in the forearm and pinky side ...

often leading to seriously debilitating conditions such as carpal tunnel or cubital tunnel syndrome. Carpal tunnel is caused by pressure exerted on the median nerve at the wrist and cubital tunnel ...