Hours after savoring that perfectly grilled steak on a beautiful summer evening, your body turns traitor, declaring war on ...

Find the latest COVID-19 news and guidance in Medscape's Coronavirus Resource Center. People who experienced an allergic reaction to a first dose of either the Pfizer/BioNTech or Moderna mRNA COVID-19 ...

Diagnoses of an allergy called alpha-gal syndrome -- which causes debilitating immune system reactions to red meat and ...

It's common knowledge that ticks can spread infections that cause serious illnesses, including Lyme disease. Now health officials are trying to raise ...

Beyond the well-documented threat of Lyme disease, health officials are now highlighting a lesser-known but potentially life-threatening consequence of tick bites: a severe allerg ...

Learn why a gel polish allergy can develop after years of use, common symptoms, causes, treatment options, and ways to reduce future reactions.

I noticed there was something wrong with my hands on the first day of my honeymoon. Deep in the Okavango Delta, the scorching ...

One of the big mysteries in food allergy is why two people with similar levels of peanut-specific antibodies can react so differently. It turns out the answer may be in the mouth and gut's bacteria. A ...

One of the big mysteries in food allergy is why two people with similar levels of peanut specific antibodies can react so differently. It turns out the answer may be in the mouth and gut's bacteria. A ...

Delayed use of epinephrine during a severe allergic reaction can increase the risk of anaphylactic shock and hospitalization. Epinephrine reverses life threatening symptoms such as tongue and throat ...