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Microcephaly (from Neo-Latin microcephalia, from Ancient Greek μικρός mikrós "small" and κεφαλή kephalé "head" [2]) is a medical condition involving a smaller-than-normal head. [3] Microcephaly may be present at birth or it may develop in the first few years of life. [3]
It is characterized by intrauterine growth restriction and postnatal dwarfism with a small head, narrow bird-like face with a beak-like nose, large eyes with down-slanting palpebral fissures, [3] receding mandible and intellectual disability. A mouse model has been developed. [4] This mouse model is characterized by a severe deficiency of ATR ...
Cephalic disorders (from Greek κεφαλή 'head') are congenital conditions that stem from damage to, or abnormal development of, the budding nervous system.. Cephalic disorders are not necessarily caused by a single factor, but may be influenced by hereditary or genetic conditions, nutritional deficiencies, or by environmental exposures during pregnancy, such as medication taken by the ...
reduced head length and width for age Turricephaly is a type of cephalic disorder where the head appears tall with a small length and width. [ 3 ] [ 4 ] It is due to premature closure of the coronal suture plus any other suture , like the lambdoid , [ 5 ] or it may be used to describe the premature fusion of all sutures. [ 2 ]
Cebocephaly (from Greek kebos, "monkey" + kephale, "head") is a developmental anomaly that is part of a group of defects called holoprosencephaly. Cebocephaly involves the presence of two separate eyes set close together and a small, flat nose with a single nostril (no nasal septum). It may be diagnosed before or after birth.
Microcephaly is a disorder in which the fetus has an atypically small head, [62] cerebral calcifications means certain areas of the brain have atypical calcium deposits, [63] and meningoencephalitis is the enlargement of the brain. All three disorders cause abnormal brain function or intellectual disability.
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Macrocephaly is a condition in which circumference of the human head is abnormally large. [1] It may be pathological or harmless, and can be a familial genetic characteristic. . People diagnosed with macrocephaly will receive further medical tests to determine whether the syndrome is accompanied by particular disorde