Medically reviewed by Doru Paul, MD Key Takeaways An armpit lump, also called axillary lump, can be a symptom of breast ...

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

Linda Jones is pulling back the curtain on a little-known breastfeeding side effect: painful, swollen armpits filled with breast milk. Jones, a 39-year-old mother of six, gave birth to triplets on ...

In a rare case, painful swelling under a woman's arm turned out to be caused by a wart-like tumor growing from an extra breast in her armpit. The swelling had been growing for four years but had only ...

Armpit pain is a common complaint that can have many causes, from mild muscle injuries to swollen lymph nodes and severe skin infections. In most cases, armpit pain isn't a reason to worry, but it can ...

Right-sided pain under the armpit may be due to muscle strain, infections, or skin conditions. Sometimes, armpit pain may indicate a more serious issue, such as cancer or a heart issue. The armpit ...