![]() ![]() ![]() Outside-in rashes, like contact dermatitis and ringworm, are due to direct exposure to an outside irritant, allergen, or organism. A few distinct features make their identification and treatment unique. When it comes to the root causes of rashes, they tend to fall into two main categories: outside-in and inside-out, explains Dr. (Note: Some of the chronic skin conditions listed below, like acne and rosacea, might not be considered rashes by all dermatologists, but their symptoms and treatments are similar enough to other rashes to include them in this list.) What causes skin rashes? That inflammation could be minor or could greatly impact the color, texture, or feeling of your skin-it all depends on the type and severity of your rash. The unifying feature of all rashes is inflammation, Dr. Basically, a rash is your skin’s way of telling you something is up, whether you’ve been exposed to an irritant or you have an underlying medical condition. “A rash is essentially inflammation in the skin that can be caused by either an external exposure or an internal factor,” says Joshua Zeichner, M.D., director of cosmetic and clinical research in dermatology at Mount Sinai Hospital in New York City. Once you can identify the cause of your rash, it’s much easier to know the right way to treat it. ![]() Skin rashes are a common issue that can impact pretty much anyone, no matter your age, hygiene, or medical history. Your skin is your body’s largest organ, so it’s not surprising that plenty can (and does) go wrong with it. ![]()
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