Find the latest stories, news, and expert advice about allergies, including medical research on symptoms, treatment, and prevention.
Despite comprehensive testing, doctors are unable to determine the cause of chronic hives 80 to 90 percent of the time. The good news is chronic hives is less difficult to manage now compared to 20 years ago. The key is knowing your trigger points.
An allergic reaction to alpha-gal, a complex sugar found in red meat, caused by a Lone Star tick bite is now the most common known cause of anaphylaxis.
People who are allergic to penicillin are often prescribed much stronger antibiotics, increasing antibiotic resistance and their risk for serious drug-resistant infections, but fewer than 1 percent of people believed to be allergic to penicillin are tested.