Forearm Muscles You have 20 muscles in your forearm, the part of your arm between your elbow and your hand. They help you move your arms, hands, and fingers and perform many of the tasks of daily ...

Hand pain can happen for many reasons. An injury or disease of the muscles, nerves, or tendons in your hand can cause pain. Arthritis, tendonitis, and carpal tunnel syndrome are common causes of ...

When your hand cramps up, ... Dehydration affects the functioning of the muscles and causes them to cramp. ... The nerve is inside the carpal tunnel, ...