Antisocial personality disorder (APD) is a personality disorder which is often characterised by antisocial and impulsive behaviour. APD is generally (if controversially) considered to be the same as, or similar to, the disorder that was previously known as psychopathic or sociopathic personality disorder. Approximately 3% of men and 1% of women have some form of antisocial personality disorder (source: DSM-IV).

A drug used to treat epileptic seizures and bipolar disorder and to prevent migraine headaches. It is also being studied in the treatment of Kaposi's sarcoma. It belongs to the families of drugs called anticonvulsants, antimanics, and migraine headache prophylactics.

Antisocial personality disorder as related to Valproic acid