Medically reviewed by Casey Gallagher, MD Armpit rashes often develop due to allergic reactions, infections, and chronic conditions. Rashes are common under the arms because the skinfold creates a ...

Symptoms of a yeast infection on the skin of your armpit include: Bright red rash Itching Burning Spots that look like pimples How to treat it: Your doctor may prescribe antifungal treatment ...

Contact dermatitis may also cause pimples on the vulva. Symptoms can show up in the vaginal area if you've ingested something you're allergic to. Contact dermatitis can appear as a rash with red ...