Causes , Incidence And Risk Factors Of Retardation

Mental retardation affects about 1 - 3 % of the population. There are many causes of mental retardation , but doctors find specific reason in only 25% of causes.
Causes of mental retardation can be roughly brokendown into several categories -
. Infections (Present at birth or occuring after birth)
. Congenital CMV
. Congenital rubella
. Congenital toxoplasmosis
. Encephalitis
. HIV infection
. Meningitis
. Choromosomal abnormalities
. Environmetal
. Metabolic
. Nutritional
. Toxic





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