Medically reviewed by Susan Bard, MD Some causes of underarm rash include infection, allergic reaction, and inflammation.

Armpit rashes are common in summer and require a combination of remedies and treatments Here’s what an expert has to say ...

If you're not experiencing any secondary side effects (like heat rash or skin infections) and are able to go about your normal activities, it can be little more than a nuisance that requires extra ...