Medically reviewed by Casey Gallagher, MD Key Takeaways Armpit rashes can be caused by allergic reactions to deodorants or shaving creams.If products like deodorant cause a rash, you might be allergic ...

Itchy, irritated armpits? You're not alone. It's a complaint that dermatologists hear often. That's because the armpit, also known as the axilla, is notoriously prone to irritation and other issues.