منابع مشابه
Consanguinity and familial mental retardation.
Studies made in a group of patients with mental retardation showed that there was a high degree of parental consanguinity of the order of 30.3%. Index cases with parental consanguinity showed a relatively higher prevalence where more than one sib was affected. Cases with metabolic defects were also more common among cases with parental consanguinity. There is a need for studies in the general p...
متن کاملFamilial mental retardation.
Familial patterns of mental retardation were examined among white and black children in the NINCDS Collaborative Perinatal Project population. Among whites, the mildly retarded children had more affected relatives than did the severely retarded, consistent with the traditional two-group theory of mental retardation. In blacks, where differences in family patterns between the mildly and the seve...
متن کاملStudy of Maternal Age, Family History of Mental Retardation, Consanguinity in Mental Retardation
Mental retardation is significantly sub average intellectual functioning present from birth or early infancy, causing limitations in the ability to conduct normal activities of daily living. Level of mental retardation, maternal age, family history of mental retardation and consanguinity associated disorder was recorded from data given by parents or center of rehabilitation. Forty seven percent...
متن کاملfamilial mental retardation associated with ataxia
the hereditary ataxias are a group of genetically defined neurological diseases which are characterized by heterogeneous clinical presentations. ataxia is defined as imbalance and lack of coordination. mental retardation associated with ataxia has been reported in some of the known and recently identified syndromes. in this review, we describe some known and novel genes that cause familial ment...
متن کاملFamilial mental retardation: a review and practical classification.
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 2-3% of the world's population. The classification of MR into different categories is determined by the extent of the handicap instead of its cause, which often remains unrecognized. Sometimes, MR runs in a family, charact...
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ژورنال
عنوان ژورنال: Journal of Medical Genetics
سال: 1976
ISSN: 1468-6244
DOI: 10.1136/jmg.13.1.27