Pseudologia Fantastica

Pseudologia fantastica, mythomania, compulsive lying, or pathological lying are four of several terms applied by psychiatrists to the behavior of habitual or compulsive lying. It was first described in the medical literature in 1891 by Anton Delbrueck. Although it is a controversial topic, pathological lying has been defined as "falsification entirely disproportionate to any discernible end in view, may be extensive and very complicated, and may manifest over a period of years or even a lifetime". The individual may be aware they are lying, or may believe they are telling the truth, being unaware that they are relating fantasies.

Read more about Pseudologia Fantastica:  Epidemiology, Characteristics, Pathological Liars