WHO predicted that the problems of impairment, disabilities and handicaps will increase in many countries in the future. Congenital impairment is caused by many factors. A lot of drugs was identified as ototoxic effect (e.g. diazepam, chinine and salysilate). Malnutrition among pregnancy may cause under weight baby born with many complications. The exposure of methyl mercury and other heavy met…
Chromosomal abnormalities is a leading cause of mental retardation. The most common genetic cause of mental retardation is trisomy 21, followed by fragile-X syndrome which is inherited i.e passed on from generation to generation. Chromosomal disorders in mentally retarded children have not been studied in Indonesia. This paper reports a survey of chromosomal abnormalities in mentally retarded c…