Does this disorder sound familiar?

There's this guy I know who is 30 years old. He lies a lot, and he believes his lies are actually true. Is there any type of disorder out there that sounds like it could be something he has? I'm referring to how he lies and then he actually believes it's true. If so, can you cite any references. Thank you. show more There's this guy I know who is 30 years old. He lies a lot, and he believes his lies are actually true. Is there any type of disorder out there that sounds like it could be something he has? I'm referring to how he lies and then he actually believes it's true. If so, can you cite any references. Thank you.
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