Even if you have no other symptoms but a numb thumb ... neck, shoulder, wrist, hand, or thumb. Certain imaging studies can detect changes consistent with ischemia, multiple sclerosis, lead ...

Then, slowly bend your hand into a fist, placing your thumb on the outside of your hand. Be gentle, don't squeeze your hand. Open your hand back up until your fingers are straight once again.

A broken finger, for example, is no minor injury. The bones in a normal hand line up precisely, enabling you to perform specialized functions such as grasping a pen or manipulating small objects in ...