Can you get blisters under your armpit?

Yes, it is possible to get blisters under your armpit. Blisters are fluid-filled bubbles that can form on the skin in response to various factors, including friction, heat, irritation, or sunburn. The armpit area is susceptible to friction from clothing or tight bra straps, making it prone to the development of blisters. In some cases, blisters under the armpit can also be caused by allergic reactions, insect bites, or skin infections.