It is worth noting that autism spectrum disorder (ASD), despite its name, is not a disease or disability. Therefore, it does not have an actual treatment. Moreover, being a spectrum it presents differently in every individual which means there is no standard ‘treatment’.
Most impairments or impediments that are caused because of ASD can be dealt with through appropriate interventions, though. These need to get tailored to the traits and situation of the individual. The goal is to make the person as self dependent as possible in every aspect of life.
Commonly used interventions include applied behavior analysis (ABA), speech therapy, cognitive behavioral therapy, physiotherapy, occupational therapy and special needs education. Providing these and other interventions at an early age may help overcome the impairments to a large extent, especially in case of milder symptoms.
Depending on the associated physical ailments that a person with ASD might experience, doctors may prescribe medications, including those meant to treat mental health issues like anxiety or depression. This is not meant as a cure for ASD but as a means to ease the co-existing conditions.