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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 ...
Encephaloceles are often accompanied by craniofacial abnormalities or other brain malformations. Symptoms may include neurologic problems, hydrocephalus (cerebrospinal fluid accumulated in the brain), spastic quadriplegia (paralysis of the limbs), microcephaly (an abnormally small head), ataxia (uncoordinated muscle movement), developmental delay, vision problems, mental and growth retardation ...
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.
Other features include a small head, small jaw, clenched fists with overlapping fingers, and severe intellectual disability. Most cases of trisomy 18 occur due to problems during the formation of the reproductive cells or during early development. [3] The chance of this condition occurring increases with the mother's age. [3]
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If pain or a medical issue is the cause, once treated, the behaviour diminishes. There is evidence for some features of premature aging including the early development of Barrett's esophagus , osteoporosis present in the teenage years, premature greying of hair and some changes to the skin of the face causing a more aged appearance compared to ...