I know somebody who has some serious mental issues. I'm trying to figure out what mental illness it could be since he's probably not properly diagnosed.
Basically, he's a pathological liar who also suffers on and off from depression. Now, I don't just mean lying. He makes up entire scenarios, degrees, accents, everything. One could call it multiple personalities, except he's deliberately making them all up. He likes for people to think well of him, so just makes up whatever seems to be suitable in the situation–even claiming to be from another country and using a different accent for a job interview. At the same time, he doesn't think "normally" and there are times when his social understanding or just his thinking are totally bizarre.
Any suggestions of mental illness descriptions to explore?