Armpit rashes can be caused by allergic reactions, infections, and chronic conditions. Armpits are a common place to get rashes because the skin there is thin, folds up on itself, and can be hairy.

Hives and rashes both affect how your skin looks and feels. Hives (urticaria) are outbreaks of discolored bumps. They’re caused by allergies or allergy-like skin reactions to irritants.

Allergic contact dermatitis: An immune system reaction that appears on the skin. It can occur a few days after exposure rather than right away. The rash may become infected, particularly if you ...

Contact dermatitis usually starts as raised red spots. It can change to blisters, as in poison ivy. The rash is itchy. Contact dermatitis is an allergic skin rash. The location of the rash may suggest ...

Allergic contact dermatitis is a skin reaction to contact from an allergen. The allergic reaction typically occurs one to two days after exposure. The reaction causes a rash that can continue to be ...

cow’s milk nuts eggs fruit Symptoms of food allergies can be mild, such as a rash. A more severe example is hives. Hives can appear when certain foods are eaten. Most people with allergies have ...

If you love to scratch an itchy rash, good news! A new study reveals ... skin comes into contact with a substance that causes an allergic reaction, such as poison ivy or metals like nickel in ...

Scratching promotes allergic inflammation and host defense via neurogenic mast cell activation. Science , 2025; 387 (6733) DOI: 10.1126/science.adn9390 Cite This Page : ...

Heat rash can clear up by itself in a few days, but there are also home treatments to help relieve itching and cool the skin. If using an ice pack ... which is a severe allergic reaction.

Constantly scratching and picking at an itchy rash really does make it worse ... inflammation and swelling in a type of eczema called allergic contact dermatitis. The findings are detailed ...

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Firstly, consider switching to neoprene-free wetsuits made from materials like Yulex (natural rubber), which may be less likely to cause allergies or rashes. Though not ideal for racing situations, ...