Can your bathroom double as a lab? At-home testing is reshaping how we learn about our bodies — and raising new questions.

Flu is a respiratory illness that’s caused by flu viruses, and “most experts believe that flu viruses spread mainly by tiny ...

A sore throat that feels like swallowing glass-a.k.a. "razor-blade throat"-has become one of the most talked-about of the new COVID symptoms linked to Stratus, the strain of the virus driving new ...

A sore throat refers to pain, itchiness, or irritation of the throat. Throat pain is the primary symptom of a sore throat. It may get worse when you try to swallow, and you may have difficulty ...