What Might Cause Random Sharp Pain in My Armpit?

Sharp pain in your armpit can happen for different reasons. One possibility involves adenopathy, where lymph nodes become swollen or irritated. Lymph nodes can react to infections, injuries, or other stresses in the body, and this can cause a sudden, sharp pain. In some cases, pain in the armpit can be a sign of something more serious, like a problem involving the nerves that come from the upper part of the chest or neck. One study noted that axillary pain (pain in the armpit) can sometimes be an early warning sign of neoplasms (abnormal growths). There are rare cases where sharp pain has been linked to conditions like Hodgkin lymphoma, where unusual lymph node involvement may occur. However, most times, such pain can also be due to minor issues like muscle strain or even changes in nerve movement. Since there are various possible causes, it’s important to speak with a healthcare provider if the pain persists or if you notice other symptoms. They can help find the exact cause and decide the best next steps for you.