How one of the oldest components of the human immune system can trigger a mysterious and little-understood syndrome.

Circular rashes may be puzzling—and alarming. The instant most individuals catch sight of a circle or ring-shaped area on the skin, their initial reaction is always ringworm. Although ringworm is a ...

In 2021, more than 25% of kids in the United States were reported to have some sort of allergy. These allergies usually show up in infancy or childhood. Allergies can get in the way of your child ...