What Causes a Rash in Your Armpit? An armpit rash is more common than you might think. Your armpits probably come into contact with more chemicals each day than most other parts of your body. Don’t be ...

The armpits are prone to breakouts and other skin issues. Causes of pimples in the armpit include friction, hidradenitis suppurativa, ingrown hairs, razor burn, and bacterial infections. The skin ...

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