Right-sided pain under the armpit may be due to muscle strain, infections, or skin conditions. Sometimes, armpit pain may indicate a more serious issue, such as cancer or a heart issue. The armpit ...

Your armpit, also known as the axilla, contains a large collection of lymph nodes, hair follicles, and sweat glands. A number of things can cause pain in the hollow created by your chest wall, muscles ...

Shoulder pain can significantly interfere with your exercise activities, but you can still safely perform an upper-body workout with a shoulder injury. The rotator cuff is a group of four muscles — ...

A hernia is when part of your insides bulges through your muscle or other tissues. A hiatal hernia occurs when the top of your stomach or another internal organ pushes through an opening in your ...

Consumer Reports has no financial relationship with any advertisers on this site. Like other parts of your body, your muscles change over the years. “As you age, your muscle fibers become less dense, ...

Jon Jones is maximizing his time off. Jones revealed this week that he underwent elbow surgery while recovering from a separate pectoral surgery. The UFC heavyweight champion took to Instagram on ...