George Santos has been accused of lying constantly. This is what experts say about the psychology of compulsive liars.

• Rep. George Santos has been accused of lying about events from the serious to the insignificant.
• Experts said pathological lying could exist on its own or be a feature of a personality disorder.
• What drives compulsive liars, and is George Santos one? This is what the experts say.

Rep. George Santos has been accused of being a fantasist, a fabulist, and an outright liar. 

Each day appears to bring new allegations about the New York congressman.