Blocked Sweat Glands Under Armpit Jun 2026

Discovering a painful lump or breakout under your arm can be alarming. While many people refer to this issue as , the underlying medical cause is usually a chronic inflammatory condition called Hidradenitis Suppurativa (HS) , historically known as acne inversa . It is widely understood that this condition begins with a blockage in the hair follicles, which then traps perspiration and bacteria in the adjacent apocrine sweat glands.

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Understanding Blocked Sweat Glands Under the Armpit: Causes, Symptoms, and Treatments Discovering a painful lump or breakout under your

Seek medical care if you have:

If you experience that heal and then return, you may have Hidradenitis Suppurativa (HS) —a chronic, non-contagious inflammatory condition. HS is often misdiagnosed as "boils" or "staph infections." Key differences: Disclaimer: This content is for informational purposes only

HS is a chronic, inflammatory skin disease. While historically thought to be a disorder of the apocrine glands, current histological evidence suggests it is a disorder of the follicular epithelium.