Cysts (fluid-filled tissue pockets), infections, and swollen lymph nodes commonly cause armpit lumps. You may see a ...

Skin cysts, or sebaceous cysts, are slightly hardened, fluid-filled bumps under the skin. When a person feels them, they are moveable. They often affect the face, neck, and torso. The term “sebaceous ...

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 ...