Your hands contain some of the most sensitive touch receptors in your entire body. And all those touch receptors are connected to your brain by a network of nerves.
If even one of those nerves—or one section of those nerves—is pinched or somehow damaged, your brain may not receive all the sensory info your hands are sending its way. The result could be numbness, says Dr. Rob Danoff, DO, director of family medicine at Philadelphia’s Aria Health System.
Danoff says one of the most common causes of hand numbness is carpal tunnel syndrome—a condition in which the median nerve, which runs down your forearm and into your hand, becomes pinched at your wrist.