5 Surprising Reasons You Might Have a Rash (Without a Fever)

5 Surprising Reasons You Might Have a Rash (Without a Fever) 150 150 Tony Guo

5 Surprising Reasons You Might Have a Rash (Without a Fever)

The average American will experience at least one skin rash in their lifetime, but there are plenty of reasons you might have one that have nothing to do with your immune system or illness, according to medical experts in the fields of dermatology and primary care. In some cases, rashes that don’t appear to be related to fever may actually signal other medical conditions, which is why it’s important to visit urgent care if your rash lasts for more than 3 days and/or does not appear to be healing itself on its own after 3 weeks. Here are 5 surprising reasons you might have a rash without a fever.

1. Urticaria: Large, hive-like rashes
The most common cause of urticaria is called hives. These rashes typically show up as red or pink, raised welts that are surrounded by areas of pale skin. They’re itchy and typically appear suddenly on your body. Itchiness is one of their most prominent symptoms, but they can also cause other effects, like swelling and pain.

2. Papular urticaria: Small bumps all over the body
This rash is usually itchy, but usually not enough to cause discomfort. It’s also transient and often clears up on its own within a few weeks. This form of urticaria can be triggered by stress, hot weather or alcohol consumption. Often there’s no known cause. If you think you might have papular urticaria, seeing your doctor should clear things up quickly — and point you toward more effective treatment options if necessary.

3. Angioedema: Swelling under the skin
Sometimes, you can get an itchy red rash for no apparent reason. That’s probably not angioedema. Angioedema happens when there’s swelling under your skin that makes part of your body swell up—it looks like a giant bubble just under your skin. The most common place to have angioedema is around your lips, but it can happen almost anywhere on your body.

4. Insect Bites
Bug bites occur when insect saliva comes in contact with your skin. Most of these bites produce itchy rashes that clear up on their own, but in some cases, they can be painful or serious. If you experience any signs of infection like redness, warmth or swelling around an insect bite, it’s best to consult a physician right away.

5. Allergic Reactions
Rashes can indicate an allergic reaction, but rashes alone are not enough to diagnose allergies. The only way to know if you have an allergy is to be tested for specific allergens. The most common allergens—pollen and dust mites—are usually responsible for seasonal rashes. Less common allergens include animal dander, food, plants and chemicals like perfumes and lotions.

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