Web M.D.-lusional
adj. The state of being convinced one is suffering from an illness/disorder/etc. much more severe than what one really has based on a Web M.D. diagnosis.
Ty: I researched my symptoms online, and I think I may have a brain tumor.
Cassie: That's Ty; he's Web M.D.-lusional.
Cassie: That's Ty; he's Web M.D.-lusional.