“Mental health symptoms are often vague ... you deserve more than a hashtag diagnosis. You deserve the full picture—and that’s something you can only get with real, professional support.

Knowing that this condition — which doctors call anhedonia — is associated with mental illnesses could improve diagnosis, by providing physical evidence, versus self-reporting. Although about one in ...

A researcher is working on apps that he hopes will be able to identify signs of depression. The programs take and analyze ...