Autism is a childhood disorder begins in early childhood (typically during the first three years of life) which affects the child?s communication skills, social interactions, and causes restricted, repetitive and stereotyped patterns of behavior in varying degrees. Autism (also called as autism spectrum disorder or pervasive developmental disorder) can range from severe to a very milder form. This mild form is called as asperger syndrome. The actual cause for autism is not clear. Autism in the first two years of life is slightly difficult to diagnose. Parents are usually the first ones to notice the symptoms, which in the first two years of life are otherwise slightly difficult to find out; usually it is the nonresponsive behavior in the first two years that may make the parents feel concerned. In cases where the child has been growing normally, his sudden withdrawal from social interactions, nonresponsive behavior along with losing that little amount of speech that he had gained initially, may lead the parents to get their toddler screened for this disorder. By the age of three, autism spectrum disorder can be clearly diagnosed. Children with ASD (autism spectrum disorder) may not follow regular developmental pattern like other kids of their age. Verbal and non verbal communication, social interaction and patterns of repetitive behavior (also called as fixations)-like being fixated with carrying some object in the hand all the time e.g. Sticks ,pencils, soap suds etc. Rocking, spinning, excessively arranging things in one line and Behavioral issues like hyperactive behavior and inability to understand emotions are a part of this disorder for some kids. Autism is nowadays called as autism spectrum disorder as there is huge variation of symptoms that the child might suffer from. Key features that should help the parents in identifying this disorder are child?s inability to babble or make meaningful gestures (like social smile, pointing to objects like fan etc,) by 18 months of age. Inability to speak even a single word by the age of two, having a poor or no eye contact, giving the impression as if he is hard of hearing when being called out to. The ?not in tune? behavior of child is the most important differentiating symptom although it is not very easy for a lay person to identify it. Homeopathy for treating autism in kids is gaining quite a popularity all over the world. Clinical experience shows that results are much better when the treatment is started at an earlier age ,even though at higher ages like six or seven some kids do show remarkable improvements; but homoeopathic intervention at an early age(before much behavioral and emotional issues come up) has distinct advantages. One important aspect that I would clearly like to mention is the fact that results with homeopathy in treating autism are selective. This means that where one segment of kids may respond extremely favorable to the treatment others may fail to yield any relief. Even while treating with homeopathy the child needs to be rated on an autism rating scale. Periodical assessments on the autism rating scale are must to gauge the improvements in the child. Homeopathy is a holistic system of medicine; it takes into consideration the constitutional picture (complete physical and mental make up of the child) along with the necessary details of the disease while prescribing. Medicines that are very effective in treating autism are Carcinocin, Thuja, and Secretin. The role of carcinocin in treating autism requires a special mention. This also does not mean that every child who has autism should be put on it; even for carcinocin to be prescribed the child has to fall within the drug?s constitutional picture.