You’re finally comfortable in bed, drifting peacefully toward sleep when suddenly—itch. You scratch. Another itch pops up. Before you know it, you’re wide awake and scratching like crazy, wondering if ...

From dry skin to allergies, here’s how to figure out what might be causing the itch.

Q. I was struggling with a cough for six weeks, especially at night when I was lying down. After two fruitless visits to urgent care, I finally went to my primary care doctor. He diagnosed walking ...