Head lice are a common and frustrating problem, especially among children. These tiny, wingless insects live on the human scalp, where they feed on blood and cause intense itching, irritation, and ...

At 2:07 a.m., after three hours of combing through my hair, I found the culprit behind my itchy scalp. I zoomed in with my phone camera and, swallowing a gag, confirmed what I’d feared: At 25 years ...