wow... that's weird. I was doing some research the other day and I heard that saying and I was wondering what that meant.
Anyway, I had a tenant move out last week because she said my house was infested with a certain type of bug which will remain nameless. I researched for a few hours and by the end of my reading I was convinced that I too was infested with these critters... I literally was feeling them crawling on me, in my eyes, nose, ears and I actually felt bites. But when I took a sample and looked under a microscope, nothing.
Anyway, a lot of cleaning, worrying and 3 extermination treatments later and we don't have a pest problem in that house, never did. The power of suggestion is very, very strong. Your mind can play serious tricks on you.
Turns out, in my opinion, this particular tenant was suffering from delusional parasitosis. Anyone ever dealt with this before?