A man went to the emergency room with an itchy rash that covered his back and kept him up at night. He was diagnosed with shiitake dermatitis, a rare condition that looks like red whip marks. The rash ...

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 ...

A man’s love of mushrooms left him with bizarre red streaks across his back. In a case study released this week, doctors describe how the unlucky fellow developed a rare skin condition from eating ...

The patient was an elderly Caucasian man who came to the clinic with complaints of a red, intensely itchy rash on his elbows (Figure 1), buttocks (Figure 2), and back. His symptoms began with a slight ...

This autoimmune disease may impact your skin as well as your nails and hair. Learn what to look for to treat lupus more effectively.

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 ...