Some children who are accurately diagnosed in early childhood with autism lose the symptoms and the diagnosis as they grow older, a study supported by the National Institutes of Health has confirmed. The research team made the finding by carefully documenting a prior diagnosis of autism in a small group of school-age children and young adults with no current symptoms of the disorder.I am very close with a person who fits this desciption. It's a very real phenomenon.
This indicates that in addition to any developmental problems- Those Kids Are Sick And Can Get Better. A spectrum of symptoms indicates a combination of causes.
This result is evidence of an infection or other immune response that wanes over time.