Rash, Skin redness: 15 Possible Causes
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  • Rash
  • Skin redness

What causes rash and skin redness? 15 possible conditions

See a list of possible causes in order from the most common to the least.


Contact Dermatitis

Contact dermatitis is a condition that makes skin red or inflamed after contact with a particular substance. Contact dermatitis is either the result of an allergen or an irritant. Allergic dermatitis usually appear...

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Allergic Eczema

When your body comes in contact with something that could make you ill, your immune system promotes chemical changes to help your body ward off disease. You are exposed to thousands of substances each day, and most wil...

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If you've ever been out hiking in the woods, you probably know to avoid certain plants: poison oak, poison ivy, and poison sumac, for example. They're all off-limits, unless, of course, you want to suffer from ...

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Eczema is a common skin condition caused by an overactive immune system. It is marked by itchy and inflamed patches of skin.

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Diaper Rash

Diaper rash is an inflammation of the skin on a baby's bottom, caused by excessive exposure to a soiled diaper. Skin on the genitals, buttocks, and thighs will look red, puffy, blistered, and sore.

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Stasis Dermatitis And Ulcers

Find detailed information on stasis dermatitis and ulcers, including causes, symptoms, treatment, and prevention.

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Drug Allergy Overview

This condition is considered a medical emergency. Urgent care may be required.

A drug allergy is an allergic reaction to a medication. Your immune system identifies the drug as foreign and acts to eliminate it from your body.

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Shingles is an infection caused by the varicella-zoster virus, which is the same virus that causes chickenpox. Chickenpox can live on in your nervous tissues.

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Bites and Stings

Saliva from insect bites and venom from stings can cause a reaction such as swelling and itching. Bee stings can cause these symptoms and possibly anaphylaxis, a life-threatening condition.

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Cellulitis is a common bacterial skin infection. Cellulitis may first appear as a red, swollen area that feels hot and tender to the touch.

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Scarlet Fever

Scarlet fever is an infection that can develop in people who have strep throat. Learn about the symptoms, treatment, complications, and prevention of scarlet fever.

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Chemical Burns

This condition is considered a medical emergency. Urgent care may be required.

Find information about chemical burns and how to prevent them. Learn about the causes, symptoms, and treatment of chemical burns.

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Ringworm of the Body (Tinea Corporis)

Ringworm is a contagious skin infection causing a small, itchy, ring-shaped rash. It is not caused by worms but rather a fungus.

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Accidental Poisoning by Soap Products

This condition is considered a medical emergency. Urgent care may be required.

Accidentally swallowing or inhaling soap products can cause you to experience life-threatening symptoms.

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MRSA (Staph) Infection

MRSA is an infection caused by a type of staph bacteria that's resistant to many different antibiotics. Learn about its symptoms, causes, and treatment.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.