Have you ever wondered why some people struggle with heat rash every summer while others appear to navigate the hot weather with no issues at all? We asked a dermatologist to explain what causes ...

Heat rash — also known as prickly heat, summer rash, or wildfire rash — occurs when the sweat gland ducts become blocked with sweat. Cooling or gently patting the rash may provide some relief.

This sounds like prickly heat. It develops when the ducts from sweat ... This causes inflammation, and the raised, itchy red rash you describe. In more severe cases blisters also develop.

What Is Heat Rash (Miliaria)? Miliaria — often called heat rash — is a skin rash that happens when sweat builds up under the skin behind blocked sweat ducts. Sweat ducts are small tubes that carry ...

and often they can get cold spots. These areas remain cool when an obstruction hampers the water's circulation within the device, meaning that certain sections fail to heat up. Thankfully Matthew ...

But at age 24, after a trip to Georgia, she developed small bumps anywhere her clothing had rubbed against her body. She figured it was a reaction to the intense heat, or perhaps some ingrown hairs.

Armpit rashes can appear in different ways, such as bumpy, smooth, or dry. Causes range from a heat rash to health conditions like psoriasis. Treatment will depend on the cause. Some armpit rashes ...

Within a week, however, the bumps grew to the size of a quarter. I showed them to my mom, who thought they were strange. That’s because the mounds were hard and also sensitive to touch.