Flu season might be winding down — but don’t stash the tissues just yet. A little-known respiratory virus with no vaccine or treatment has been quietly picking up steam since the start of winter, ...

Think cold weather makes you sick? Learn what really causes winter illness—and why that drippy cold‑air nose is usually ...

Add Yahoo as a preferred source to see more of our stories on Google. Stuffy noses and bothersome coughs aren’t the only winter illness symptoms making the rounds right now. Lots of people are also ...

According to National Weather Service figures, heat killed 199 Americans last year. That is more than double the second leading cause of weather-related deaths in the United States, flooding, which ...

According to National Weather Service figures, heat killed 199 Americans last year. That is more than double the second leading cause of weather-related deaths in the United States, flooding, which ...

Hong Kong's Centre for Health Protection boarded a Holland America Line cruise ship to investigate reports of illness.

A nationwide analysis of 470 adults who blamed tick bites for months of illness has found no evidence of persistent tick-borne infection driving their symptoms. The result challenges a widely held ...

Illness anxiety disorder, also known as hypochondria or hypochondriasis, is a chronic psychiatric condition in which a person without medical symptoms is preoccupied with worry about having or being ...