Mental Retardation

Mental retardation may be a symptom of down syndrome, phenylketonuria, reyes syndrome, hypoglycemia, encephalitis, meningitis, listeriosis or heavy metal poisoning. To learn more about the cause of your symptoms, click on each of the diseases listed below.

Down Syndrome

Phenylketonuria

Reyes Syndrome

Hypoglycemia

Encephalitis

Meningitis

Listeriosis

Heavy Metal Poisoning

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