Why Do I Get a Sudden Sharp Pain Under My Left Armpit When I Sneeze?
1. Introduction A sudden sharp pain under the left armpit during a sneeze is most frequently caused by an intercostal muscle strain or irritation of the pleural lining within the chest wall. The explosive mechanical force of sneezing forcefully and instantaneously expands the rib cage, rapidly stretching inflamed muscles, irritated ligaments, or sensitive pulmonary tissues … Read more