Anaphylaxis can cause severe itching, difficulty breathing, fainting, and abdominal pain. These symptoms usually begin about 30 minutes after coming into contact with an allergy trigger. First, call ...

While not all the effects are visible, anaphylaxis can cause noticeable symptoms such as swelling, hives, and skin flushing. It’s important to seek medical help as soon as symptoms begin. Anaphylaxis ...

Lindsey Ulin wasn't feeling great when she boarded her flight from Phoenix to Austin, Texas, in early March. Ulin, 28, had just spent four days on vacation, hiking and enjoying the warm weather in ...