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.

PUPPP stands for pruritic urticarial papules and plaques of pregnancy. Also known as polymorphic eruption of pregnancy (PEP), it is one of the most common types of rash you can get during pregnancy.

We may earn commission from links on this page, but we only recommend products we love. Promise. Welcome to your safe space for all things hormonal acne, hosted by me, your resident acne-prone editor.