Wear light, breathable clothing, shower after you exercise and change your sheets regularly
If you find yourself breaking out in a sweat and covered in pimples, you’re not alone. Sweat pimples become more common with summer heat and physical activity, but they can pop up after strenuous exercise, too.
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Dermatologist Sean McGregor, DO, shares why you get sweat pimples and what you can do to avoid them.
Sweat pimples get worse over the summer because of increased oil production, bacteria, heat and friction that work together to clog your pores and cause inflammation. It’s not the sweat specifically that causes tiny red bumps to form, but it’s the combination of environmental factors (like humidity and heat), with skin irritation and inflammation.
“In the summer months, increased sweating can lead to clogged or obstructed pores,” explains Dr. McGregor. “But we also know that certain lotions and moisturizers, especially those that are a little bit thicker, can contribute to more clogging and further the development of acne — especially when you put sunscreen on top of all that.”
But he’s also quick to say that doesn’t mean you should stop wearing sunscreen. Wear it every day, even when you’re indoors, and cut back on all the other products you use when it’s especially hot outside.
Sweat pimples can pop up any time of the year. It just depends on the amount of bacteria that gets on your skin and how irritated or clogged your pores become. For example, friction is a common cause of sweat pimples year-round. So, if you exercise often or wear tighter clothing, you can sometimes find sweat pimples popping up along your waistline, groin, chest and back, even in the spring or fall.
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Heat rash and sweat pimples look similar, but they’re different conditions. A heat rash causes tiny, red bumps to appear in areas that don’t get a lot of oxygen (like your armpits, groin, chest and back).
Unlike sweat pimples, heat rash feels like a prickly, burning itch. It happens when your sweat ducts become blocked, trapping sweat under your skin. If you sweat a lot, a heat rash is a likely occurrence.
If breakouts are bumming you out, there are some helpful solutions. Dr. McGregor suggests the following for reducing the severity of sweat pimples:
“Dermatologists are experts when it comes to skin, hair and nails,” says Dr. McGregor. “If you’re experiencing sweat pimples and have trouble managing your condition with your current regimen, visit a dermatologist.”
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