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Microcephaly describes a head size (measured as the distance around the top of the head) significantly below normal for a person's age and sex, based on standardized charts.

Microcephaly most often occurs because of failure of the brain to grow at a normal rate. Skull growth is determined by brain expansion, which takes place during the normal growth of the brain during pregnancy and infancy.

Conditions that affect brain growth can cause microcephaly, including infections, genetic disorders, and severe malnutrition
Primary Causes:

Down's syndrome
cri du chat syndrome
Seckel's syndrome
Rubinstein-Taybi syndrome
trisomy 13
trisomy 18
Smith-Lemli-Opitz syndrome
Cornelia de Lange syndrome

2006-10-07 17:00:29 · answer #1 · answered by missourim43 6 · 0 0

I've taught special ed. for 25 years and have taught many children with many levels of severity of microcephaly. It's basically a small cranium size with a smaller than average brain. Some kids are mildly affected while others are severely affected. They usually will all have some kind of learning difficulty and depending on the degree of brain damage, other difficulties as well, motor, speech, etc. I've taught microcephalic kids with mild learning problems to the ones who could not move or communicate at all. They all require lots of stimulation from the very beginning to be able to use as much of their brain as possible.

2006-10-08 00:06:56 · answer #2 · answered by b_friskey 6 · 0 0

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