Medically reviewed by Marla Anderson, MD Cysts (fluid-filled tissue pockets), infections, and swollen lymph nodes commonly ...

Another chronic health condition that can cause a rash in your armpit is hidradenitis suppurativa, also called acne inversa. In this condition, hair follicles near sweat glands get blocked up and ...

Armpit pain is a common complaint that can have many causes, from mild muscle injuries to swollen lymph nodes and severe skin infections. In most cases, armpit pain isn't a reason to worry ...