As winter settles in, several viral illnesses are circulating nationwide, including the highly contagious norovirus. The virus is the leading cause of vomiting and diarrhea in the United States, ...

Hepatitis C is a tiny virus with a significant impact. It's a small RNA virus that spreads through the blood and infects the liver. Even though today's medicines can cure it, hepatitis C remains a ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...