Autism is
Neurodevelopmental disorder
Social and language communication problem
Metabolic disease
Mainly due to hypothalamus damage
(B) Social & language communication problem# Autism (i.e. marked impairment in reciprocal social and interpersonal interaction): Absent social smile, Lack of eye-to-eyecontact, Lack of awareness of others' existence or feelings; treats people as furniture, Lack of attachment to parents and absence of separation anxiety, No or abnormal social play; prefers solitary games, Marked impairment in making friends, Lack of imitative behavior, Absence of fear in presence of danger.
Miscellaneous