Hypoxia and Medicine

Is it illegal to invent a medical condition without any medical evidence?

Just as the question says. Now, this invented medical condition wouldnt be used to obtain any kind of drugs, chemicals, or services. What i'm asking is this: Is it legally permissible to pass a fictitious medical condition in an informal, social situation? Wicked. And no, its not lying about it to your friends for sympathy or whatever. Its just for shits and giggles. New medical term? SSD Sporadic Situational Disamusement. Feel free to use it on your friends Cheers!

Public Comments

1. Lest the morality police come knocking on your door.. If you used it to get out of a ticket, or get a handicap pass, then you're lying to the man. I think you're allowed to lie to your friends. Til they find out and quit listening to you. :) 'Luck pullin' it off. Heh.
2. In the setting you suggest (Social) it would not be illegal, but it would be a lie and I would question why someone would feel the need to invent an illness.
3. It's perfectly legal to lie regarding just about anything so long as you are not attempting to obtain money, goods, or services that you would not otherwise be entitled to receive. So, go ahead. Tell your friends that you have Ebola. I'm sure you'll be the hit of the party after that.