The exact cause of Autism or autism spectrum disorder (ASD) is not known, but it is believed to be a combination of genetic and environmental factors.
Research suggests that several genes may be involved in the development of autism and that certain genetic mutations may make an individual more susceptible to the disorder.
Studies also suggest that environmental factors such as viral infections, prenatal exposure to certain toxins, and complications during pregnancy or birth may also play a role in the development of autism.
Research continues to evolve in this area and it is likely that the causes of autism are multifactorial and complex.