Some causes of underarm rash include infection, allergic reaction, and inflammation. Itchy, inflammatory, bacterial, or fungal rashes in your armpit can be mild or severe, short-lived or chronic.

Procter & Gamble's Old Spice deodorant has caused severe rashes and chemical burns to possibly thousands of "unsuspecting consumers," according to a class-action lawsuit filed this month that seeks ...

Procter & Gamble's Old Spice deodorant has caused agonizing armpit burns and rashes on hundreds, if not thousands, of unsuspecting customers, a new class-action lawsuit claims. The plaintiffs filed ...