Apr 18, 2022 · Armpit lumps happen in men and women for various reasons, including infections, skin irritations and chronic diseases. They may be as small as a pea or as large as a golf ball. Armpit lumps typically go away on their own. On rare occasions, they’re a sign of cancer. What is an armpit lump?

Jul 6, 2020 · Will a lump in the armpit go away? When should I see a doctor? In many cases, lumps under the armpit are caused by a swollen lymph node — in other words, the body’s immune system responding to a small issue such as an infection or irritation.

Feb 3, 2023 · We’ll walk you through the causes of an armpit lump, next steps, and when it’s time to visit your doctor.

Sep 26, 2024 · An armpit lump, or axillary lump, is often caused by swollen lymph nodes in the armpit. This condition can also be associated with tenderness or pain in the lump under the arm. A small or pea-sized lump in the armpit can also be …

Mar 14, 2025 · However, fibroadenomas and cancerous tumors may feel hard and immobile. Some people may experience pain with an armpit lump. Painful lumps are often associated with infections and...

Jan 31, 2025 · While an armpit lump is a common symptom of breast cancer, they are also linked with infections, cysts, skin problems, and other factors like antiperspirants. Many armpit lumps appear and then go away after a few days. Pain may or may not be present. A healthcare provider should check any armpit lump that is hard and doesn't change.

Jun 24, 2024 · Lumps in your armpit can have a range of causes from an ingrown hair to a lymph node. Find out what your armpit lump may be, and how to treat it. Written by Lauren Levy, MD, FAAD. Medically reviewed by Andrew Le, MD. Why is there a lump in your armpit? A painful lump in the armpit may feel odd but it’s usually not too worrisome.

When assessing an armpit lump, size and shape play significant roles. A cancerous lump often feels firm or hard, unlike the softer texture of benign cysts or swollen lymph nodes. Additionally, cancerous lumps may have irregular edges and can vary in size.

Breast cancer, lymphoma, leukemia, metastatic cancer, inflammatory breast cancer, sarcoma, melanoma, thyroid cancer, pancreatic cancer, and lung cancer are all possible culprits. If you notice a persistent lump in your armpit or experience any concerning symptoms, it is crucial to seek medical attention for proper evaluation and diagnosis.

Lumps in the armpit may have many causes. Lymph nodes act as filters that can catch germs or cancerous tumor cells. When they do, lymph nodes increase in size and are easily felt. Reasons lymph nodes in the armpit area may be enlarged are: Cysts or abscesses under the skin may also produce large, painful lumps in the armpit.