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The gray matter remains normal in all characteristics while the white matter changes texture, becoming soft and gelatinous. Rarefaction of the white matter is seen through light microscopy and the small number of axons and U-fibers that were affected can also be seen. Numerous small cavities in the white matter are also apparent.
Leukodystrophies are a group of, usually, inherited disorders, characterized by degeneration of the white matter in the brain. [1] The word leukodystrophy comes from the Greek roots leuko, "white", dys, "abnormal" and troph, "growth".
Hypomyelination-congenital cataract syndrome is a rare autosomal recessive hereditary disorder that affects the brain's white matter [1] and is characterized by congenital cataract (or cataracts that begin in the first two months of life), psychomotor development delays, and moderate intellectual disabilities. It is a type of ...
The white matter in preterm born children is particularly vulnerable during the third trimester of pregnancy when white matter developing takes place and the myelination process starts around 30 weeks of gestational age.
Developmental disability that affects all areas of a child's development is sometimes referred to as global developmental delay. [2] The most common developmental disabilities are: Motor disorders, and learning difficulties such as dyslexia, Tourette's syndrome, dyspraxia, dysgraphia, dyscalculia, and nonverbal learning disorder.
White matter is the tissue through which messages pass between different areas of grey matter within the central nervous system. The white matter is white because of the fatty substance (myelin) that surrounds the nerve fibers (axons). This myelin is found in almost all long nerve fibers, and acts as an electrical insulation.
Congenital Disorder of Glycosylation (CDG) Congenital hyperinsulinism; Congenital insensitivity to pain with anhidrosis (CIPA) Congenital pulmonary airway malformation (CPAM) Conjoined twins; Costello syndrome; Craniopagus parasiticus; Cri du chat syndrome; Cyclopia; Cystic fibrosis
This is an alphabetically sorted list of all mental disorders in the DSM-IV and DSM-IV-TR, along with their ICD-9-CM codes, where applicable. The DSM-IV-TR is a text revision of the DSM-IV. [1] While no new disorders were added in this version, 11 subtypes were added and 8 were removed. This list features both the added and removed subtypes.