If you had to have a syndrome what would you go for? The obvious is Tourette's because we all love to swear, it seems most if not all of us are Mongs so Downs is already spoken for. I'd go for Alien Hand Syndrome so it felt like that blue bird from Avatar was tugging me off. Take your pick https://en.wikipedia.org/wiki/Category:Syndromes
https://en.wikipedia.org/wiki/Ectrodactyly So ER's ex-wife can feel something when I bowling-grip her
My favourite: https://en.wikipedia.org/wiki/Jumping_Frenchmen_of_Maine "... individuals who would obey any command given suddenly, even if it meant striking a loved one..."
There was one time I thought I was a magic tractor and I turned into a field,not sure what that's called.
I already have several; OCDs, a fearsome twitch and a tendency to soil myself dramatically whenever I hear the words "excuse me sir". So I probably don't need any more.