Medically reviewed by Casey Gallagher, MD Fact checked by Khara Scheppmann Armpit rashes can be caused by allergic reactions, ...

Piracha, MDPossible causes of armpit pain range from the minor irritation of clothing, or an infection that goes away quickly, to serious medical issues such as swollen lymph nodes and cancer-related ...

Tunnels called sinus tracts can form under the skin between the lesions, which can also rupture and leak pus. HS occurs in areas of the body with skin folds, so the armpits are particularly likely ...