A LOOONG story short, I was looking around in the (US) miltitary medical requirements document (http://www.usapa.army.mil/pdffiles/r40_501.pdf) I.E. what condition can get you kicked out.
Most of it is pretty obvious (must have all your limbs, can not be blind, etc) there is a surpringly quite a few unusual things in there. Some I might say are trivial. I guess its to cover their buts legally if/when a really unsually case comes along.
You can be kicked out for
having too much acne!
being a organ transplant recepiant!
having a history of sleep walking
thought you would like to know ^_^.