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There are many causes of retardation. These includes Down syndrome, velocariofacial syndrome, fetal alcohol syndrome, problems during pregnancy and other genetic disorders.
fetal alcohol syndrome
Mental retardation is a side effect of Down Syndrome. Down syndrome or trisomy 21 (or Down's Syndrome in British English) is a chromosomal disorder caused by the presence of all or part of an extra Twenty-first chromosome. Children with Down syndrome tend to share certain physical features such as a flat facial profile, an upward slant to the eyes, small ears, a single crease across the center of the palms, and an enlarged tongue. A doctor can usually tell if a newborn has the condition through a physical exam. Down Syndrome also causes mild to moderate mental retardation.
Fetal alcohol syndrome. This includes decreased development of the fetus, intra-uterine growth retardation, mental retardation.
Mental retardation may be caused by an inherited abnormality of the genes, such as fragile X syndrome.
down syndrome
Retardation / Mutation (Down Syndrome)
Lesch-Nyhan syndrome is a rare genetic disorder that affects males. Males with this syndrome develop physical handicaps, mental retardation , and kidney problems.
They have visual retardation syndrome
Varicella syndrome in a newborn is characterized by abnormally small limbs and head; scarring of the skin; eye defects; and, mental retardation.
Chatterbox syndrome refers to a condition resulting from hydrocephalus where the individual suffers from severe mental retardation but is unimpaired or overdeveloped language skills.
Down Syndrome