An allergic reaction happens when your immune system overreacts to something that should be harmless. Whether that happens ...

The more things two people share, the higher their chances of being allergic to the same things. Twins are more likely to ...

If one has a reaction to a new food, is the other more likely to as well? BjelicaS/iStock via Getty Images Plus ...

Allergic contact dermatitis from dental implants may present differently in individual patients. The most frequent manifestation is a lichenoid reaction ... metal stents and drug-eluting stents.

The difference between this and an allergic reaction was exemplified in patients who had both irritant and allergic reactions at the same time (see Fig 3). Additionally, patients that had ...

Allergies, whether spring sneezes due to pollen or trouble breathing triggered by a certain food, are caused by a combination of someone's genes and the environment they live in.

Call 911 if a rash is accompanied by trouble breathing and a drop in blood pressure. Your child may be having a life-threatening allergic reaction to an insect sting or other trigger ... To speed up ...

Dr. Kita's lab is studying the immunological mechanisms behind many common allergic diseases, including asthma, hay fever, atopic dermatitis, chronic sinusitis, food allergies and drug allergies. Led ...