Abstract
Blood concentrations of pituitary hormones adrenocorticotropin (ACTH), prolactin, growth hormone, and adrenal hormone–cortisol were measured in 36 autistic and 27 control individuals. Individuals with autism had significantly lower serum concentrations of cortisol (p < 10−6), and significantly higher concentrations of ACTH (p = 0.002) than control age- and sex-matched subjects. Also, prolactin concentrations in autistic patients with epilepsy were significantly higher when compared with normal subjects. The observed hormonal changes may indicate dysfunction of the hypothalamo-pituitary-adrenal axis in individuals with autism.
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