The Bottom Line

If the pathological liar in your life is someone you care about, perhaps you could help them find more productive ways to address their low self-esteem and anxiety, or even to come to terms with a difficult past, if that's relevant. Although research into effective treatments is largely lacking (partly because ‘pathological liar’ has yet to be recognised as a formal diagnosis), a sensible step could be to gently encourage the pathological liar you know to seek professional mental health support.