: Use a soft brush or a mild scrub in a circular motion to clear dead skin cells that might be clogging the pore. Cleansers with salicylic acid or benzoyl peroxide are often recommended for their ability to break down debris.

"It’s a classic case," Dr. Aris said, examining the inflamed area under a bright light. "You have an obstructed apocrine duct. It’s essentially a retention cyst. Because it’s deep, it won't drain on its own, and trying to force it will only lead to infection."

If the gland had become infected (turning into an abscess), a simple injection wouldn't suffice. The doctor would need to numb the area, make a small incision, and drain the backed-up fluid. While effective, this comes with a caveat: it treats the symptom (the fluid) but not the cause (the damaged duct), meaning it could return.

To understand treatment, you must understand the mechanism. Unlike the tiny eccrine glands that cool you down, apocrine glands in the armpit secrete a thicker fluid into the hair follicle. In HS, the follicle becomes clogged with keratin (skin protein) and sweat.

: Apply a clean, warm, damp cloth to the area for 10–15 minutes several times a day. The heat increases blood flow and helps dissolve debris or "coax" the gland open.