A gym bunny says she is “living in fear” after discovering a rare allergy means exercise could trigger a potentially fatal reaction.

Add Yahoo as a preferred source to see more of our stories on Google. "Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Spotting new bumps on your body can ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Picture this: You’re going about your day, when all of a sudden you spot a red, splotchy rash on your ...

When a blotchy red rash pops up on your skin, it's not easy to know exactly what the cause is. With thousands of skin diseases to choose from, deciphering your skin can be a challenge. But with skin ...

But there’s one side effect that’s well established but little known and still puzzling to doctors: the “keto rash” or prurigo pigmentosa. This rash fits the man’s case perfectly—red, raised, itchy ...

Fifth disease, or slapped cheek syndrome, can cause a bright red rash on one or both cheeks while the rest of the face is pale. On darker skin, it may be harder to see. Fifth disease mainly affects ...