The term autism describes a pattern of 'qualitative differences and impairments in reciprocal social interaction and social communication, combined with restricted interests and rigid and repetitive behaviours, often with a lifelong impact'.
Risk factors:
Down's syndrome
Fragile X syndrome
Muscular dystrophy
Neurofibromatosis type 1
Tuberous sclerosis
<35 weeks gestation
Parental schizophrenia-like psychosis
Sodium valproate during pregnancy
Cerebral palsy
ADHD
Family history
Diagnosis:
Language delay/regression in pre-school children
Reduced or negative responses to others in all ages
Reduced or absent interactions in all ages
Reduced eye contact and pointing in all ages
Reduced imagination/ideas in all ages
Restricted interests in all ages
Over/under-reaction to sensory stimuli in all ages
Diagnosis in secondary school children:
Specific features:
Social and emotional development more immature - lack of common sense, less independent than peers
Poorly developed social or motor coordination skills
Particular areas of knowledge/reading/vocabulary are advanced for mental age