Medically reviewed by Doru Paul, MD An armpit lump—or axillary lump—can occur as a symptom of many conditions that range from ...

But you don’t need to panic as most armpit bumps are harmless and easily treatable. These bumps can appear for various reasons, such as skin irritation, infections, or underlying health conditions.

Finding a lump in your armpit can be worrisome, especially if it's painful or appears unexpectedly. The lump could be a sign or symptom of conditions like breast cancer or hidradenitis suppurativa ...