Heat rash is a skin condition that develops in hot, humid environments. It causes small discolored or fluid-filled blisters to develop in the folds of your skin or areas where clothing rubs the skin.

Sign up for the Morning Brief email newsletter to get weekday updates from The Weather Channel and our meteorologists. Skin conditions and diseases are very common ...

Armpit rashes are common in summer and require a combination of remedies and treatments Here’s what an expert has to say ...