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The Usual Suspects: Common Causes of Rash Under Breasts

Young beautiful Asian women workout at the gym indoor. She is using the elastic band to stretch her arms and legs. She is wearing gym clothes grey bra outfit and get sweaty.
Heat, moisture, and friction are the most common causes of a rash under the breasts. Image credit: Shutterstock

Understanding the causes of rash under the breasts is the first step toward getting relief. These are the most frequent culprits: