my son is 28 , he has habit of moving his hands rapidly all the time , and with in the last two years it seems to have spread to his body, he also has conversations with people that are not their while having one with some one who is , i am not even sure he s aware he does it,. he did not have this when he was sent to germany but when he came back thats when we noticed it but thought it would go away eventually but it has just increased