You may have swollen armpit lumps due to infections, cysts, or vaccines. In severe cases, some armpit lumps could be a sign of breast cancer or other conditions. Talk to a doctor if you have ...

Swollen lymph nodes in the armpit may indicate an infection, injury, or disease that requires medical attention. However, it’s usually not a sign of cancer. Lymph nodes are critical parts of the ...

Also known as a pilonidal cyst, the condition forms when a sac of tissue fills with air or fluid in the crease of your buttocks. Pilonidal cyst, doctors say, is mostly caused by a skin infection.