Itching, Rash: 25 Possible Causes
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What causes itching and rash? 25 possible conditions

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

1

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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2

Dermatitis

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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3

Eczema

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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4

Bites and Stings

Whether you're in the water, on a mountain trail, or in your backyard, wildlife you encounter have ways of protecting themselves and their territory. One method of defense involves biting or stinging. The wounds ca...

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5

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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6

Candida Fungus Skin Infection

Candida is a type of fungus that can cause an infection in your skin. In normal conditions, your skin may host small amounts of this fungus, but problems arise when it begins to multiply and creates an overgrowth...

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7

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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8

Allergies Overview

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

An allergy is the immune system's response to a foreign substance (allergen) that is not typically harmful to a person's body. This attack response may involve inflammation, sneezing, and a host of other symptoms.

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9

Shingles

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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10

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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11

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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12

Scabies

Scabies is a skin infestation caused by a tiny microscopic bug known as the human itch mite. This mite is usually passed from simple skin to skin contact and can be transmitted through infested clothing or bedding...

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13

Ringworm (Dermatophytosis)

Dermatophytosis, more commonly known as as ringworm, is a fungal infection of the skin. Ringworm is a misnomer. The infection isn't caused by a worm.

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14

Measles

Measles is a very contagious infection of the respiratory system. One of its several symptoms is a sore or swollen throat.

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15

Stasis Dermatitis And Ulcers

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

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16

Scarlet Fever

Scarlet fever is an infection that may develop after strep throat. It usually affects children between six and 15 years old. It can cause a rash that consists of small red bumps and feels like sandpaper.

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17

The Bugly Truth About Flea Infestations

Learn about flea infestations, including what causes an infestation, how to control an infestation, and how to prevent another infestation from occurring.

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18

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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19

Pemphigoid

Pemphigoid is a rare autoimmune disorder that most often affects the elderly. Lesions on the abdomen, arms, legs, and mucous membranes is a common symptom.

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20

Ichthyosis Vulgaris

Ichthyosis vulgaris, also known as "fish scale disease," is a generally genetic skin disease that causes dry, dead skin cells to accumulate in patches on the skin.

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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.
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