If your skin gets a little itchy every once in a while when you workout, it’s probably not anything to worry about. However, if you develop symptoms of an allergic reaction – like hives or swelling – then it’s important to seek help.

“Exercise-induced urticaria requires medical attention as it can be quite significant,” Professor Rudenko says. “There are certain diagnostic tests that can be run that, together with a detailed medical history, can help to diagnose and treat this condition.”

Treatments for exercise-induced urticaria may include antihistamines, as well as other medications used to treat asthma and acid-reflux.

You may also need to make lifestyle changes to reduce your risk of a flare-up. These changes may include:

Exercising in cooler environments (e.g. late evening or air-conditioned rooms)
Avoiding very hot showers and baths
Finding ways to manage and reduce stress (e.g. meditation or seeking professional advice)

“Why do I get all itchy after a run or intense workout?” A dermatologist and allergist explain