Diagnosis of ASD is difficult as there’s no particular medical test to detect the condition. Doctors check out the complete medical and developmental history of a child and study their behaviours to make a diagnosis. There are a series of assessments and tests, which helps to rule out other mental health conditions and helps to figure out what are the coping mechanisms a child is using to deal with his daily life. This helps the doctor to decide on how much of help he needs and what is the best suitable treatment for the child.