1.5-3% of population Causes of intellectual disability (30-50% are non-syndromic or idiopathic): Prenatal factors genetic Fragile X syndrome tuberous sclerosis, neurofibromatosis metabolic and storage disorders chromosomal Down syndrome, Trisomy 18 Cru di chat syndrome sex chromosome abnormality dysmorphic syndromes Prader-Willi Cornelia (Bachman) de Lange syndrome Sotos syndrome prenatal infections (TORCH) drugs and toxins: FAS Perinatal … Continue reading Intellectual Disability