Rash

Rash causes

Rashes can happen for many different reasons, including:

• Allergic reactions to foods, plants or products
• Skin contact with soap, detergent or chemicals
• Heat or sweat buildup
• Infections like viruses, bacteria or fungus
• Health conditions like eczema or psoriasis

Rash risk factors

Some things can make rashes more likely to happen.

• Having allergies or asthma
• Using new skincare or laundry products
• Wearing tight or non-breathable clothing
• Being outdoors near plants, bugs or animals
• Having skin conditions like eczema or dry skin

Rash symptoms

Rashes can look and feel different depending on the cause.

• Red, pink or blotchy skin
• Itching or burning
• Bumps, blisters or flakes
• Swelling in the area
• Warmth or pain in more severe cases

Rash diagnosis

Doctors can usually figure out what’s causing the rash by:

• Looking at your skin and asking about your symptoms
• Asking about new foods, soaps or outdoor exposure
• Doing a skin test or allergy test if needed
• Taking a skin sample if the cause isn’t clear

Rash treatment

Many rashes get better with home care or simple medicines.

• Use gentle lotion or hydrocortisone cream
• Take antihistamines for itching or allergies
• Avoid scratching and keep the area clean
• Wear loose, soft clothing
• See a doctor if the rash is spreading, painful or lasts more than a few days

When to seek care

See a doctor if:

• The rash spreads quickly or won’t go away
• You have a fever or feel very sick with the rash
• The rash is painful, has pus or looks infected
• You’re not sure what caused it
• The rash is near your eyes, mouth or genitals