Persistent depressive disorder appears to have its roots in a combination of genetic, biochemical, environmental, and psychological factors. In addition, chronic stress and trauma can provoke PDD. ...

Persistent depressive disorder (PDD) ... This represents close to 7.9 percent of all American adults. In addition, around 2.5 percent of Americans will experience PDD at least once in their lifetime.

Persistent Depressive Disorder (PDD), also known as dysthymia, is a chronic form of depression characterised by a persistent low mood and a lack of interest or pleasure in daily activities.

With fewer symptoms and less severe presentation, persistent depressive disorder (PDD) differs from clinical depression. If someone has become used to their baseline feelings of sadness, they ...

Pervasive developmental disorder, not otherwise specified (PDD-NOS). This mouthful of a diagnosis included most children whose autism was more severe than Asperger's syndrome, but not as severe as ...

The logic behind the changes seems sound. “There wasn’t any evidence after 17 years that [the DSM-IV diagnoses] reflected reality,” says Bryan King, director of Seattle Children’s Autism ...

This article reviews the results of 43 studies published since 1966 that provided estimates for the prevalence of pervasive developmental disorders (PDDs), including autistic disorder, Asperger ...

Persistent depressive disorder appears to have its roots in a combination of genetic, biochemical, environmental, and psychological factors. In addition, chronic stress and trauma can provoke PDD. ...