Why do my armpits hurt and feel deeply bruised when I wear a tight sleeveless t-shirt?
1. Introduction Wearing a tight sleeveless t-shirt causes deep armpit pain because the restrictive armholes directly compress the sensitive axillary lymph nodes, underlying neurovascular bundles, and the surrounding fascial tissues. The continuous mechanical friction and constriction of blood flow create localized tissue ischemia, presenting neurologically as a deep, bruised sensation. Because the armpit lacks a … Read more