Are Underarm Lumps Dangerous?

Armpit lumps may be caused by cysts, infection, or irritation due to shaving or antiperspirant use. However, these lumps may also indicate a serious underlying health condition. Seek medical attention if you have an armpit lump that gradually becomes enlarged, is or isn't painful, or doesn't go away.

Should I go to the doctor for a lump in my armpit?

If you've found a lump under your armpit, it is important to contact your doctor. While it could potentially indicate cancer is present, it is far more likely to be a benign condition like an infection, allergy, or a cyst. A lump under the armpit may be related to swelling of the lymph nodes.

When should you worry about a lump under armpit?

In most cases, an armpit lump will be harmless, but it's important to know what may have caused it and if it's something you should see a doctor about. If your lump has been there for more than two weeks or it's getting bigger, you should see a doctor as soon as possible.