What can cause severe upper arm pain (periodic aching between elbow and shoulder, sometimes pain going down arm and into shoulder)?
severe pain and swelling.
strectch
biceps tendon rupture, C5 radiculopathy, many, many more, need to see neurologist to localize
Pain in the right upper arm that feels like being punched or having a shot can be caused by muscle strain, a contusion, nerve compression, or even a shoulder or rotator cuff injury. It is important to rest the arm, apply ice, and consider seeking medical evaluation if the pain persists or is severe.
Rotator cuff or shoulder muscle injury.
Pain in the left shoulder blade and tingling in the left arm can be caused by a pinched nerve. The exact cause of the pain should be diagnosed by a qualified physician.
An anterior dislocation of the shoulder is typically considered the most severe. This occurs when the upper arm bone (humerus) is displaced forward out of the shoulder socket. It can cause damage to surrounding structures like nerves and blood vessels, resulting in pain and instability.
See your health care provider as soon as possible. If shingles is the cause, early treatment can lessen the duration of pain.
pain in right arm
Get a cervical MRI and see if there are any bone spurs impinging on your spinal cord or nerves
hence, the funny bone
see a doctor