Medically reviewed by Corinne Savides Happel, MD Symptoms of food allergies can include itchy, raised areas and swelling ...

In a healthy body, mast cells (the “lookout” cells of the immune system) only release histamine when they detect a foreign invader, like pollen or venom. In CSU, these cells dump histamine into the ...

Hives usually aren’t a sign of a serious medical condition. But their sudden appearance may merit a trip to urgent care or the emergency room if they show up along with other symptoms. Hives are itchy ...

Hives are itchy red or white bumps that often stem from an allergic reaction. Unlike some other rashes, hives are not contagious and are an allergic-type reaction. Hives and other rashes can become ...

Hives are a type of rash that results from an allergic reaction, insect bite, infection, and more. You can identify hives by pressing down on the bump — if it turns white, it's a hive. You should see ...

What could be worse than being allergic to chocolate you ask? How about an allergy to your cellphone? Sounds ridiculous, but it's a thing. Are your hands inexplicably itchy, red and/or swollen? Do you ...

Most people who believe they are allergic to penicillin likely aren’t, according to a doctor at UVA Health. 10 News Anchor ...

Imagine this: You’re at your doctor’s office with a sore throat. The nurse asks, “Any allergies?” And without hesitation, you reply, “Penicillin.” It’s something you’ve said for years – maybe since ...

Medically reviewed by Casey Gallagher, MD CSU is a skin condition that causes hives and swelling lasting six weeks or more.The cause of the condition is often unknown, but in the majority of cases ...

An allergist in Dallas explains the winter allergies that can result from too much time indoors during winter storms, and why ...

Add Yahoo as a preferred source to see more of our stories on Google. Penicillin is a substance produced by penicillium mold. About 80% of people with a penicillin allergy will lose the allergy after ...