Histamine (HISS-tuh-meen): Histamine is a substance that the body releases during an allergic reaction. It can cause allergy symptoms that affect the eyes, nose, throat, skin, digestive system, and ...

Medically reviewed by Susan Bard, MD A rash under your breast may commonly be caused by warm temperatures, friction, or excess moisture. Sometimes, bacterial and fungal infections, eczema, allergic ...

Skin allergies are common and often frustrating to diagnose. But new technology could soon help change that. Dr. Alison Bruce ...

Waitrose is recalling a popular ready meal after it said some products were “mispacked”, causing an allergy risk. The ...

Getting stung by a bee, wasp or hornet is unpleasant, but for many of us, the risk is far greater than just temporary swelling, inflammation and pain. Here’s what you need to know.

A ready meal product sold at Waitrose has been recalled over concerns that it could trigger life-threatening allergic ...

Skin rash from diabetes medical devices is common, under-recognized, and expected to increase as device use increases.

They're rare, but alcohol allergies can range from mild to life-threatening, says Samuels.

Taking medication for an allergic reaction? You might face severely itchy skin as a side effect of Zyrtec or Xyzal, according ...

A new paper argues that the popular allergy medication is a worse choice than newer drugs, like Claritin and Allegra. Experts ...

The number of adults with life-threatening food allergies is on the rise. When researchers at Northwestern University’s Feinberg School of Medicine surveyed more than 40,000 people, they were shocked ...

Can the foods you eat cause skin problems? Why is your skin itchy after you eat certain foods? Find out what foods can trigger an allergic reaction and what you can do about it.