There may also be learning, speech, social, and physical disabilities. Mental retardation types, severity, causes, symptoms. Postnatal causes of developmental disabilities in children aged 3. Pdf prenatal and postnatal risk factors for mental. Dsm iv diagnostic and statistical manual of mental disorders, 4th ed. Diagnostic and statistical manual of mental disorders. Postnatal organic causes of mental retardation ncbi nih. Full text get a printable copy pdf file of the complete article 1. Other postnatal causes of retardation are classified according to frequency. Postnatal organic causes of mental retardation europe. Start studying prenatal, perinatal, and postnatal risk factors. This study evaluated the contribution of prenatal, perinatal, neonatal, and postnatal. Prenatal causes of mental retardation include congenital infections.
Postnatal psychological causes of mental retardation ncbi nih. Get the facts from webmd about its symptoms, causes. No children had more than one postnatal cause for their disability. In earlier times, it was common to declare that approximately 80% of the true origins of mental retardation were of unknown cause, whereas here, for example, we are using the figure of 30%.
Request pdf prenatal and postnatal risk factors for mental retardation among children in bangladesh this study evaluated the contribution of prenatal, perinatal, neonatal, and postnatal. Causes of mental retardation are numerous and include. Identification and evaluation of mental retardation american. Prenatal, perinatal, and postnatal risk factors flashcards. Prenatal and postnatal risk factors for mental retardation. Intellectual disability is a condition in which your brain doesnt develop properly or function within the normal range. Postnatal exposure of infant to heavy metals such as lead can cause. Intellectual disability now the preferred term for mental retardation is a disorder characterized by cognitive delays. In the remaining 523 children, primary brain damage was evident.
Get a printable copy pdf file of the complete article 853k, or click on a page image below to browse. Mental retardation, developmental delay, neurogenetics, cerebral plasticity. Perinatal causes of mental retardation can be genetic, lack of proper nutrition, drug abuse and injury to the fetus inside the uterus such as a mother being abused or in an accident, lack of. Mental retardation mr is defined as an overall intelligence quotient lower than 70, associated with functional deficit in adaptive behavior, such as dailyliving skills, social skills and. Severe cases of id may be diagnosed soon after birth. Mental retardation intellectual disabilities happen because the brain gets injured or a problem prevents the brain from developing normally. Among children with serious mental retardation, a specific cause of the disability. A group of 89 children had no obvious definitive cause for retardation, although epilepsy, mixed eye and hand dominance, visual perceptive disorders, or poor muscle tone was present in some. There are many prenatal factors responsible for mr. Other postnatal causes of retardation are classified according to frequency, as encephalitis, accidents, meningitis and a miscellaneous group consisting of epilepsy and tumours. Describe the prenatal perinatal and postnatal causes of. Prenatal and postnatal risk factors for mental retardation among. Postnatal psychological causes of mental retardation.
Postnatal causes of developmental disabilities in children. Pdf factors causing mental retardation researchgate. Get a printable copy pdf file of the complete article 1. Prenatal and postnatal risk factors for mental retardation among children in bangladesh.
Genetics and pathophysiology of mental retardation. Getting proper prenatal care, taking a prenatal vitamin, and getting vaccinated against. Postnatal factors associated with mild mental retardation included histories of lack of breastfeeding and severe diarrheal disease with dehydration. Causes of mental retardation etiology approximately 3% of the population has an intelligence quotient iq of less than 70, among whom a cause for the mental retardation can be established in less than half of all cases flint et al. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Mental retardation mr is a definition which comprises a series of conditions whose common feature is an intellectual handicap that develops before the age of 18, afflicting 23% of the worlds. The percentages of developmental disabilities accounted for by postnatal causes ranged from 3. These problems can happen while the baby is growing inside his or her mom, during the babys birth, or after the baby is born. Risk factors for mental retardation archives of disease in childhood.
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