Numerous conditions can cause right arm pain, including musculoskeletal injuries, pinched nerves in the neck, and compressed peripheral nerves.

Forearm pain often indicates an injury or medical condition affecting the bones, muscles, tendons, nerves or blood vessels of the area.

According to MayoClinic.com, arm pain, including pain on the right side under the arm, may be generated by nerves, bones, muscles, tendons, ligaments or joints. Underarm pain is often the result of traumatic or overuse injuries.

Arm wrestling can produce arm injuries similar to trying to lift too much weight at the gym. Muscles, tendons and ligaments in your shoulder, arm and elbow are especially at risk of injury. Seek medical attention if you suspect a severe injury.

Pain in your left arm during exercise may be due to local issues or problems that involve other areas of the body.This pain can range in severity from a minor inconvenience to a life-threatening condition.

A broken arm is a common injury; about one in 20 broken bones involves the upper arm bone, according to the American Academy of Orthopaedic Surgeons.

Because your arm is not a part of your digestive system, you may be confused if you experience pain in your arm when eating. The most probable cause of arm pain that develops when eating is gallbladder disease. According to MayoClinic.

Intermittent left arm pain may have many causes. It may be the result of a simple arm injury or may be a precursor to more serious heart issues. Left arm pain should never be ignored. A doctor should be notified immediately if intermittent left arm pain occurs.

Chest pain is a symptom that frequently causes patients to seek medical care. The most common causes of chest pain are fairly benign, and do not require further medical attention.

The person walking into an emergency room with symptoms of pain, numbness and tingling in the left arm should be prepared for a series of tests to rule out a heart problem.

A long list of conditions can cause arm pain, from a heart attack to a bug bite, carpal tunnel syndrome to an autoimmune disorder. Some conditions that affect completely different areas of the body can even cause arm pain.

The shoulder is a complicated joint formed by the convergence of 3 bones and multiple muscles and tendons that work together to give the arm its exceptional mobility. Overuse, injuries and arthritic conditions can damage the shoulder, causing pain that often extends into the upper arm.