Yes but unlikely as the symptoms are obvious. Well, when I say obvious people with aspergis(the most common form of autism) look no different to normal people, but their behaviour is vastly differnt. So, if you saw them, you wouldn't know, so couldn't diagnose them, but if you communicated with them you could probably tell.If your worried see your doctor or a psychologist, it can't hurt to try now can it.If you do find out you have it, don't worry, my cousin has it and he got treatment for it, through special one-on-one communication, but now you can't tell the difference between him and a normal unnafected person.