Why do mental health diagnoses so often overlap? New genetic research reveals shared roots and points toward more effective ...

While the concept of eating disorders has become more broadly discussed over the last few years, less is understood about the psychology behind them — namely, what is happening inside the brain of a ...

The DSM-5, psychology’s diagnostic manual, defines erectile disorder as a sexual dysfunction marked by a recurrent inability to achieve or maintain an adequate erection during partnered sexual ...

Comorbidity is when a person has more than one health condition at once. Researchers investigating the comorbidity of personality disorders have found people with certain disorders may have other ...

Credit: Getty Images Some rare psychological disorders may occur so infrequently that most mental health professionals might never encounter them. Approximately 1 of every 5 adults in the United ...