The armpit is rich in sweat glands and the pores from these can become blocked, which may go on to become infected, causing a sore lump. Many of these do eventually go on their own, so leave it ...

Feel around each breast or side of your chest in a circular motion all the way up to your collarbone and under each armpit.

Two weeks ago I found another larger lump in my right armpit, and both areas were very sore when the lumps appeared. The appointment for the breast clinic may take 15 weeks. As the lumps have now ...

Medically reviewed by Kashif J. Piracha, MD Armpit pain has many causes. Muscle strain and rashes are common minor conditions. Nerve compression and infections are more serious conditions. Swollen ...

Hidradenitis suppurativa in the armpit is a painful condition that ... and swell. This causes the painful lumps of HS. Scientists believe that genetics, hormones, and environmental factors all ...

This may be a muscle pain or a problem within the shoulder joint itself. The left armpit contains lymph nodes or glands, ...

"I'd been wondering what that was." I was stunned she'd noticed. To me, the lump growing under my armpit for the last two years was something only I could see. To her, it was an enviable third breast.