He is misleading, and a storyteller (or tale-teller).
If he's compelled to lie, even when the truth would be better, then he may be a pathological liar.
And if he exaggerates his health issues, he could be a hypochondriac.
Someone who exaggerates the truth
When someone exaggerates in a funny way
A caricature of someone is a description of them that exaggerates some of their traits while wildly understating others. It is typically used to entertain or insult someone.
A person who over exaggerates is often called a drama queen. Clinically the tendency to over exaggerate is called histrionic.
Blows things out of proportion/exaggerates problems
Blows things out of proportion/exaggerates problems
a ham
alarmist
Scam or Brag
Motherfuc*er
A person who pretends to be sick or exaggerates illnesses or pains.
a dickweed