MS Flashcards
how is MS caused
interferes with the myelin sheath. Characterized by randomly scattered patches of demyelination in the brain stem, cerebrum, cerebellum and spinal cord.
Periods of remission and exacerbation.
When myelin sheath is first damaged symptoms may be mild or barely noticeable. Myelin can regenerate in very early stages.
As disease progresses, loss of myelin permanently damages neurons.
is MS one type of disease
no there are many different forms of MS. some more severe than others
symptoms of MS
there are many different type of symptoms depending on where the myelin sheath is effected.
progression of MS
Recovery following each exacerbation is increasingly less complete over time and permanent loss of function eventually occurs.
Degree of disability varies. Some patients can maintain independence or assisted living throughout a normal life span. Others may be severely limited in activities or become bedridden in a few years.
how do you know if your MS is going to be good or bad
In most cases the onset of MS at a young age indicates a more severe form of the disease with increased disability.
statistics of MS
MS considered to affect young to middle-age adults. Onset 15 to 50 years of age.
Women affected more than men.
Higher rates in northern Europe, northern United States, southern Canada and southern Australia and New Zealand.
Low rates in southern Europe, Japan, China and South America.
Five times more prevalent in temperate climates ( between 45 and 65 degrees latitude ).
African Americans have prevalence rate that is 40% that of European Americans. Suggests genetic susceptibility related to ethnicity.
250,000 t0 350,000 people in US have MS
causes of MS
Many experts believe MS is caused by an inflammatory response caused by an individual’s immune system, perhaps triggered by a virus in a genetically susceptible individual.
Possible precipitating factors may include infection, emotional stress, excessive fatigue, pregnancy, and a poorer state of health.
Role of precipitating factors is controversial.
types of MS
Relapsing- remitting
Primary- Progressive
Secondary-Progressive
Progressive-Relapsing
relapsing - remitting MS
Clearly acute attacks with full recovery or with sequelae and residual deficit upon recovery. Periods between disease relapses are characterized by lack of disease progression.
primary-progressive MS
Disease progresses from onset with occasional plateaus and temporary minor improvements.
Characterized with no remissions.
secondary-progressive MS
Begins with an initial relapsing-remitting course, followed by progression at a variable rate, which may also include occasional relapses and minor remissions.
May have plateaus.
progressive-relapsing
Progressive disease from onset, with clear acute relapses, with or without full recovery.
Periods between relapses are characterized by continuing progression.
things that can cause an exacerbation of MS
include infection, emotional stress, excessive fatigue, pregnancy, and a poorer state of health.
prognosis of MS
Has improved with new immune modulating drugs that slow the progression of the disease and decrease the number of episodes of active disease.
Now life span is only slightly shorter than those without the disease.
clinical symptoms of MS
Often insidious and gradual, with vague symptoms occurring intermittently over months or years.
The disease may not be diagnosed until long after the onset of the first symptom.
The disease has a varied distribution in the CNS so signs and symptoms vary over time.