James, a 22 year old Caucasian male, describes difficulty raising his right arm to the side and is unable to shrug the right shoulder. On examination, he complains of tenderness over the acromioclavicular joint and weakness with external shoulder rotation. The diagnosis is:

shoulder impegment syndrome

Explanation:

Shoulder pain caused by friction of the connective tissue (tendon) in the shoulder blade.

Impingement syndrome is caused by inflammation due to repetitive movements of the shoulder. Injuries and advanced age are also other causes.

The pain may be constant and increase with movements to lift or reach an object.

Rest, medications, and physical therapy may be helpful

c. will be your answer sorry if im wrong tho