Compulsive Lying. Is your husband or wife, boyfriend or girlfriend a compulsive/ pathological liar or a sociopath? To begin with, it may help to understand the. Compulsive lying, also known as pseudologia fantastica, pathological lying, and mythomania, describes a condition in which an individual lies. Compulsive lying disorder, also known as mythomania or pseudologia fantastica is more common than most people realize. Learn more here. It is listed in the Diagnostic and Statistical Manual of Mental Disordersthird edition. I am so paranoid and insecure. I started back up recently, even though I had slipped up over the years here and there, but I would gambling app myself and try to do some self correction. Tasha Rube, LMSW Licensed Master Social Worker. My mum has had a dreadful life with my Dad. Im just soo confused.