Experiencing a sharp pain under the right armpit can be a cause for concern and may indicate various underlying conditions. This type of pain can range from mild to severe and may be accompanied by other symptoms such as swelling, tenderness, or a tingling sensation.

One possible cause of sharp pain under the right armpit is a muscle strain or injury. This can occur from activities that involve repetitive arm movements or sudden twisting motions. In such cases, rest, ice, and gentle stretching exercises may help alleviate the pain and promote healing.

Another potential cause could be an infection, such as an abscess or swollen lymph nodes. Infections can occur when bacteria enter the body through small cuts or breaks in the skin. If left untreated, these infections can progress and cause more severe symptoms. Seeking medical attention is important in order to receive an accurate diagnosis and appropriate treatment.