Carpal tunnel syndrome is a condition that affects the hand, wrist, and arm. It happens when the median nerve gets compressed, or squeezed, at the wrist. The median nerve is a large nerve running from the palm to the upper arm.
Dead arm syndrome is a condition that affects the shoulder. It’s caused by repeated movements, which place stress on the joint.
Various things can cause pain in the middle of the bicep, which is the muscle at the front of the upper arm. Muscle strains and bruises, for example, are common causes of bicep pain.