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| | eMedicine - Inherited Metabolic Disorders : Article by Pieter R Kark, MD, MA, FAAN, FACP |
 | | Earlier onset or juvenile Huntington disease, most commonly seen in adults of middle age, often was seen in the children who inherited the gene from their father, whereas the congenital form of myotonic dystrophy was seen mostly in children born to affected mothers. |
 | | The biochemical defect underlying Refsum disease appears to have been propagated by the western Vikings, just as the genetic defect predisposing to MS (in or near the genes for the human leukocyte antigen complex) was spread by both the eastern and the western Vikings to European populations. |
 | | The clinical disease may be associated with attacks of sensory neuropathy, ataxia, psychosis, and even coma, and occurs when a patient with the polymorphism or genetic predisposition ingests a drug or eats food that precipitously increases the synthesis of porphyrins. |
| www.emedicine.com /NEURO/topic680.htm (6140 words) |
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