Allergies

A single tick bite can trigger a bizarre meat allergy—here’s how alpha-gal syndrome is reshaping people’s diets.

Remarkable new treatments can free millions of kids and adults from the deadly threat of peanut allergy, tackling one of our fastest-growing medical problems

Unless you have celiac disease, there are few health benefits to a gluten-free diet

The immune system senses damage to cell membranes caused by pore-forming proteins and mounts a response

The Asian needle ant looks ordinary, but its sting can be worse than a fire ant’s and can be dangerous for anyone who has experienced anaphylaxis

Plants are just trying to reproduce; immune systems are just trying to keep us safe

Longer growing seasons and increased pollen production driven by climate change could be aggravating your seasonal allergy symptoms

New research demonstrates that Xolair, an injectable asthma medication, can reduce severe reactions to peanuts, milk and eggs by dulling an overactive immune response

The allergy and asthma drug montelukast, also known as Singulair, can cause psychiatric side effects—and researchers aren’t sure why

Snotty, stuffy noses are the hallmark of cold and flu season, but some medications and at-home remedies may offer relief

New research offers insight into how rain and thunderstorms break up and spread respiratory irritants, such as pollen, fungal spores and pollutants

The bite of the lone star tick can cause an allergy to red meat, as well as to dairy and some medications