If you have a suspicion that your son has a developmental disablity like Asperger Syndrome or any other ASD, you should seek out an evaluation before you try to diagnose him yourself.
With so little information it is difficult to point you in the right direction, but you cannot go wrong with a Developmental Pediatrician, found at children's hospitals, who will do a full, indepth evaluation that will miss nothing. If your son is older, in his early teens or so, then you could try a psychiatrist A. a neuropsychologist too, but especially for very young children, a Developmental Pediatrician is the best choice.
One caution; if you are describing a true Self Injorous Behaviro (SIB) A. you think your son could hurt himself when he hits himself, then make a crisis appointment with a Board Certified Child psychiatrist right away. That appointment will not be to diagnose Asperger syndrome, but to protect him from dangerous behavior.
You truly need an evaluation that will take many different people ( some possiblities: speech therapists, OT's, PT's Nuerologists, genetisicists, ENT's Audiolgists, psychologists) to diagnose an Autistic Spectrum Disorder. It is not done with one quick trip to any one doctor with a few short statements. It will take many hours of evaluation.
Depending oh his age, he may qualify for public services. Before age 3 State Early Intervention programs may assist you, A. after age 3, school districts are responsible. You should not use public services to replace a private evaluation A. treatment. Get a full private evaluation for your son A. know more about his condition A. what he needs than any public agency, then supliment his program privately after you find out what schools will give you. Never know less about your son than any school district.
Start with a Developmental Pediatrician.
M.
OK, can't resist...what color is his BM? I have one aspie who is 18 A. a child with a more severe ASD who is 11. We have been to Developmental Pediatricians, psychiatrists, speech therapists, neuropsychologists, occupational therapists, physical therapists, vission therapists, developmental optomitrists, geneticists, psychologists, educational specialists, schools for kids with ASD's, social skills groups, hippo therapy, play therapy, cognative behavioral therapy, A. we participate in the AGRE program (Autism Genetic Research Exchange) A. not one repuatable professional has ever asked what color thier BM's were...sorry, that is a bunch of ____@____.com