My sister's son is 2 years old. I think he is not normal. He never speaks even with his mother. He likes to play all alone and does not like anybody disturbing him. Also he never respond to anybody even to his name. He is least bothered who comes or goes. He never makes eye to eye contact with anybody. He not even feels shy or afraid on seeing unknown people. He simply sits alone for hours together with his toys. Also when he wants something he will take us to that place but will never ask for it. I mean never speak a word. Is there any problem. If yes then what is the solution. Or are there any tests that has to be done.