what can cause swelling and pain in armpits
Swollen lymph nodes. Your lymph nodes can swell up when infection invades your body, which may be caused by viruses, bacteria or parasites. Other conditions that can cause swelling of the lymph nodes leading to pain under right or left armpit include cancer and autoimmune disorders like rheumatoid arthritis.
Quick Answer. Rotator cuff tendinitis, an injury, a heart attack, a broken shoulder bone and certain diseases can cause shoulder pain, according to Healthline. An overuse injury, a sports injury, nerve entrapment, a bone fracture and irritation of the underarm may bring about armpit pain, notes Healthgrades.
Secondly, swollen lymph nodes can be due to mastitis. Mastitis, which is a breast inflammation, can be caused by an infection during breastfeeding. Symptoms include red and swollen breast on one or both sides and enlarged and painful lymph nodes in the armpit on the affected side.
Swelling is the enlargement of organs, skin, or other body parts. It is caused by a buildup of fluid in the tissues. The extra fluid can lead to a rapid increase in weight over a short period of time (days to weeks). Swelling can occur all over the body (generalized) or only in one part of the body (localized).