According to the abstract:
"This case is an example of a common malabsorption syndrome associated with central nervous system dysfunction and suggests that in some contexts, nutritional deficiency may be a determinant of developmental delay. It is recommended that all children with neurodevelopmental problems be assessed for nutritional deficiency and malabsorption syndromes."
With a gluten free diet, vitamins, fatty acids (omega 3,6 and 9) and fresh juice which made vitamins easier to absorb...
"The patient's gastrointestinal symptoms rapidly resolved, and signs and symptoms suggestive of autism progressively abated."