This reminds me a little of the old game Mastermind, which I used to play a LOT of. You had to guess what the other persns pattern was. But in that game there was always an indication of your choice, and how close you were to the solution. In this all you're doing is guessing. I suspect the items on the persons face and body are a hint, but even when I used all the things assotiated with the blue feet people I didn't get a cure, so maybe I'm wrong. I think the game has potential, but something to indicate if I have one right, or two right, would be useful. 

Interesting idea, however I found it a bit difficult

I can't tell how to cure anyone, other than by guessing!  Otherwise it's a very interesting idea, kinda similar to my entry! :D