lol u don't
To deal with a 23 year old stepson who is a pathological liar, talk to him. Encourage him to seek counseling.
If she is always lying to you, then she is a pathological liar.
a pathological liar is someone who constantly tells lies.
You can tell that someone is a pathological liar if you catch them in lies often. If you consistently think that someone is lying, this could mean they are a pathological liar.
I can give you a couple. He is a pathological liar. The disease is pathological.
A pathological liar may also be schizophrenic. Both are defects in the brain and schizophrenia may be the cause of pathological lying.
A Chronic liar will lie about everything knowing that it is a lie. A Pathological liar will begin to believe his/her lies are actually the truth
A liar A compulsive liar or a pathological liar. if it's a physiological disorder, a pathological and compulsive lying then the person is a mythomaniac.