hi, my brother age is 28 yrs old, since he was 16yrs old, he use to go to silence behavior, he does not talk to any body, he does not take bath, he most of time lying in room, he talks himself some times, in a month mostly 15-20 days behave like this, when he comes out of his silence behavior, he talks more to the people and when he goes to take bath, first he wash all the area including wall & floor. Please advise me where have to go for treatment .