Search results
Results from the WOW.Com Content Network
The word "cretinism" is an old term for the state of mental and physical retardation resulting from untreated congenital hypothyroidism, usually due to iodine deficiency from birth because of low iodine levels in the soil and local food sources. The term, like so many other 19th century medical terms, acquired pejorative connotations as it ...
Congenital iodine deficiency syndrome (CIDS), also called cretinism, [2] is a medical condition present at birth marked by impaired physical and mental development, due to insufficient thyroid hormone production (hypothyroidism) often caused by insufficient dietary iodine during pregnancy. It is one cause of underactive thyroid function at ...
Hyperthermia causes anencephaly, which is when part of the brain and skull are absent in the infant. [61] [68] Mother exposure to toxoplasmosis can cause cerebral calcification, hydrocephalus (causes mental disabilities), [69] and intellectual disability in infants. Other birth abnormalities have been reported as well, such as chorioretinitis ...
Mental retardation and microcephaly with pontine and cerebellar hypoplasia (MICPCH) – also known as mental retardation, X-linked, syndromic, Najm type (MRXSNA); X-linked intellectual deficit, Najm type; intellectual developmental disorder, X-linked, syndromic, Najm type; X-linked intellectual disability–microcephaly–pontocerebellar hypoplasia syndrome; and by variations of these terms ...
The disorder is caused by a disruption to the genetic processes that form the brain early in pregnancy, [3] though the cause is not identified in most cases. [4] Many genetic syndromes can result in microcephaly, including chromosomal and single-gene conditions, though almost always in combination with other symptoms.
PAH deficiency causes a spectrum of disorders, including classic phenylketonuria (PKU) and mild hyperphenylalaninemia (also known as "hyperphe" or "mild HPA"), [24] a less severe accumulation of phenylalanine. Compared to classic PKU patients, patients with "hyperphe" have greater PAH enzyme activity and are able to tolerate larger amounts of ...
Down syndrome is the most common genetic cause of intellectual disability. Among children, the cause of intellectual disability is unknown for one-third to one-half of cases. [11] About 5% of cases are inherited. [12] Genetic defects that cause intellectual disability, but are not inherited, can be caused by accidents or mutations in genetic ...
Risk factors for mental illness include psychological trauma, adverse childhood experiences, genetic predisposition, and personality traits. [7] [8] Correlations between mental disorders and substance use are also found to have a two way relationship, in that substance use can lead to the development of mental disorders and having mental disorders can lead to substance use/abuse.