lecture 4: multiple sclerosis (MS), Flashcards
for a UMN disorder what
- structures involved
- tone
- reflexes
- sensation
- involuntary movements
- voluntary movements
- structures involved: CNS
- tone: increased
- reflexes : increased (clonus and babinski)
- sensation : decreased
- involuntary movements : mm spasm
- voluntary movements : synergistic patterns
Wha does a LMN disorder …
structures involved
tone
reflexes
sensation
involuntary movements
voluntary movements
structures involved: PNS cranial nerves
tone: decreased
reflexes: decreased
sensation : decreased
involuntary movements : fasciculations
voluntary movements : weak or absent
What does a basal ganglia disorder…
structures involved
tone
reflexes
sensation
involuntary movements
voluntary movements
structures involved: BG
tone: increased
reflexes : decreased or normal
sensation : normal
involuntary movements : resting tremor
voluntary movements : bradykinesia , akinesia
What does a cerebellum disorder..
structures involved
tone
reflexes
sensation
involuntary movements
voluntary movements
structures involved: cerebellum
tone: decreased
reflexes : decreased
sensation : normal
involuntary movements : none
voluntary movements : ataxia , intention tremor , dysdiadokinesia , dysmetria , nystagmus
what is multiple sclerosis
a progressive autoimmune disease characterized by chronic , progressive , inflammatory demyelination of the neurons in the CNS
can affect UMN and LMN
what is myelin produced by in the CNS
oligodendrocytes
who is MS most common in
african american and in females between 20-50
what is progressive relapsing MS
steady decline since onset with super imposed attacks (<10% of cases)
what is secondary progressive MS and when does it follow
initial relapsing remitting MS that suddenly begins to have decline without periods of remission
follows on from relapsing/remitting
what is primary progressive MS
steady increase in disability without attacks (10-20%)
what is relapsing remitting MS
unpredictable attacks which may or may not leave permanent deficits followed by periods of remission
most of the cases (80-90%)
what type of MS is the most common
relapsing remitting
what is the clinical isolated syndrome for MS
first neurological episode or attack
refers to a first episode of inflammatory demyelination in the eCNS that could become MS
could become MS if hav 1 symptoms over 24 hours , lesion on the brain , increased tone. lhmettris sign , and uhlhoff sign
for a Cliniccally isolated syndrome (CIS) a persons must have symptoms for a least ____ and there is one lesion on the brain and what 3 other things
24H
increase tone , lhermitte’s sign and Uhthoff’s sign
what is lhermitte’s sign
electric shock like sensation that run down the back , arms and or legs with neck FLEXION
UMN sign
what is uhthoff’s sign
temporary worsening of neurological symptoms with increase in temp
what is an MS exacerbations
new and recurrent MS symptoms lasting > 24 hours
exacerbating factors for MS include what 3 things
- Viral or bacterial infection (cold, flu, UTI)
- Organ disease (hepatitis, pancreatitis, asthma attacks)
- Stress
• ___ stress: divorce, death, job loss, trauma
• ___ stress: exhaustion, dehydration, malnutrition, sleep depravation
major
minor
what is Pseudoexacerbations in MS
Temporary worsening of MS symptoms (usually <24h)
is misdiagnosis or delayed diagnosis of MS common?
yes bc the initial presentation of MS is highly variable
is there a definitive diagnostic test for MS? what kind of diagnosis is it and who is it made by
no
diagnosis of exclusion made by neurologist
the diagnosis of MS relies on 2 key features determined from evidence of lesions seen on the MRI , what is it
lesions in the CNS in space and time (at least 2 attacks with 2 lesions on the brain)
signs and symptoms of MS vary on the location of the lesion , but early symptoms typical include what 2 things
- Visual disturbances (e.g. diplopia)
- Paresthesias progressing to numbness, weakness and fatiguability