MOST ASD,STILL SOME ENVIROMENTAL FACTORS OR THEIR EFFECTS PERSIST AS UNDERLYING PATHOLOGIES THAT ARE IDENTIFIABLE AND TREATABLE. THE FACT THAT TOXIC METAL ARE POURING FORTH FROM NUMEROUS AUTISM SPECTRUM CHILDREN BEING TRATED WITH PHYSICIAN-SUPERVISED CHELATION THERAPY.IS VERY SAD SITUATION IN THE UNITED STATES ARE OTHER NATIONS ARE EXPERIENCING AND EPIDEMIC OF AUTISM SPECTRUM DISORDERS.A MAJORITY OF CASES,ENVIROMENTAL FACTORS ARE IMPLICATED,FORTUNATELY POSITIVE DEVELOPMENT ABOUND,DESCRIPTION OF AN AUTISTIC VARIANT OF ILEAL-LYMPHOID HYPERPLASIA HAS BEEN CONFIRMED.OTHERS FINDING AND RELATED TREATMENTS ARE LINKING IMMUNE IRREGULARITIES AND CLINICAL DIAGNOSIS AN INCREASING NUMBER OF AUTISM SPECTRUM CHILDREN IMPROVE IN RESPONSE TO ABA, DIET ,VITAMINS SUPPLEMENTS,NUTRITIONAL SUPPORT,CHRLATION THERAPY,,BUT FOR US THE ABA IS GREAT,