What Causes Armpit Pain?

Muscle Strain

Muscles located in the arms and chest can be the cause of armpit pain due to injury or muscle overuse. Individuals can injure their chest muscles, such as the pectoralis major, which runs from the shoulder to the chest, by playing sports. This muscle can also be hurt through weight lifting. Another muscle in the upper arm that can cause armpit pain when strained is called the coracobrachialis. The coracobrachialis can suffer from muscle strain during sports such as such as tennis and baseball. Throwing can overstretch the muscle, and in turn, the muscle becomes tight and painful. Typically, muscle strain and armpit pain from minor injuries improve within a week. Stretching and rest can also reduce pain. However, if the pain persists or a lump appears, patients should visit a doctor.

Keep reading to discover more armpit pain causes.