Nearly everyone scratches mosquito bites, but something as simple as scratching an itch turns out to be far more biologically ...

Medically reviewed by Corinne Savides Happel, MD Allergies occur when your immune system overreacts to harmless substances, ...

Researchers have identified a compound that could block certain life-threatening and hard-to-treat allergic reactions.

Medically reviewed by Corinne Savides Happel, MD Allergy immunotherapy is a long-term treatment for chronic allergies that ...

These 11 foods are great sources of vitamin D and might help you combat deficiencies, a lack of energy and much more. The amount of vitamin D can vary depending on the fish you use. For instance ...

Older adults with cancer respond just as well as younger patients to immune checkpoint inhibitors despite age-related immune system differences, according to a study by researchers from the Johns ...

We could be nearing a cure for those nasty spring allergies — and even allergic reactions altogether ... target the chemical histamines that your immune system releases when it detects an ...

These might be symptoms of an allergic reaction or anaphylaxis. When you are allergic to a certain food item or object, and you accidentally consume the same, your immune system reacts to protect ...

One of the biggest risks of current allergy treatments is the potential for severe allergic reactions, including life-threatening anaphylaxis. This happens when the immune system mistakes the ...

“It's a really rare disease. It's basically one in a million,” says Onyx Middleton's neurologist Dr. Varun Kannan photos courtesy of Cherise Middleton Freshman year of college, 18-year-old ...