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Multiple
sclerosis is a disease of the central nervous system
characterized by the destruction of the myelin sheath
surrounding neurons, resulting in the formation
of "plaques." MS is a progressive and
usually fluctuating disease with exacerbations (patients
feeling worse) and remissions (patients feeling
better) over many decades. Eventually, in most patients,
remissions do not reach baseline levels and permanent
disability and sometimes death occurs. The cause
of MS is unknown. The most widely held hypothesis
is that MS occurs in patients with a genetic susceptibility
and that some environmental factors "trigger"
exacerbations. MS is 3 times more common in women
than men, with diagnosis usually made as young adults.
Also see demyelinating disorders.
From: http://www.tdh.state.tx.us/immunize/dict_terms.htm |
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