https://www.google.com/webhp#q=+%22path ... l+lying%22
It is a stand-alone disorder as well as a symptom of other disorders such as psychopathy and antisocial, narcissistic, and histrionic personality disorders, but people who are pathological liars may not possess characteristics of the other disorders. Excessive lying is a common symptom of several mental disorders.
Google "pathological lying", I dare you
Moderators: Pike Ridge Beagles, Aaron Bartlett