Neuro- MS, Epilepsy and Parkinson's Flashcards
What is MS?
Chronic inflammatory demyelinating disease of the brain and CNS
Where are white matter lesions most common in MS?
Periventricular areas Corpus callosum Optic nerve Brainstem Cerebellum Cervical spine
What is the most common type of optic neuritis?
Posterior (retrobulbar)
What are the features of optic neuritis?
Pain on moving eyes Decreased visual field Decreased visual acuity Loss of colour vision RAPD
How does the optic disc appear in anterior optic neuritis?
Optic disc is….
Red
Swollen
Exudates and haemorrhages
How does the optic disc appear in the most common type of optic neuritis (posterior)?
Optic disc appears normal
What are the possible brainstem/ cerebellar features of optic neuritis?
Diplopia Vertigo Dizzyness Ataxia Dysarthria INO
What is the most common subtype of MS?
Relapsing remitting MS
Other than RRMS, what are the subtypes of MS?
Primary progressive MS
Secondary progressive MS
Progressive relapsing MS
Which 2 main tests are used to diagnose MS?
MRI
LP
Which 3 differential diagnoses of MS can also have CNS lesions on MRI which are disseminated in space and time?
- Vasculitis
- Ischemia
- Neurosarcoid
Which 2 differential diagnoses of MS can also have oligoclonal bands on LP?
- Neurosarcoid
2. Autoimmune conditions
What are the criteria for patients to be prescribed DMTs?
- Aged >18 years
- RRMS
- 2 or more relapses in 2 years
- Can walk 100 metres or more with no assistance
Baclofen and Tizanidine can be prescribed to treat which symptom of MS?
Spasticity
Gabapentin and Amitryptiline can be prescribed to treat which symptom of MS?
Pain
Fluoxetine and Amantadine can be prescribed to treat which symptom of MS?
Fatigue
Oxybutynin is an anticholinergic used to treat which symptom of MS?
Bladder instability
IV _______________ is prescribed 1g/day for 3 days to shorten relapses of MS.
Methylprednisolone
Which factors worsen the prognosis of MS?
Male gender
Increased number of relapses
Progressive subtypes
Motor and cerebellar features
There is a ___% chance that MS patients will be unable to walk unaided after 15 years
50%
Which 2 demyelinating disorders are differentials for MS?
ADEM- Acute demyelinating encephalomyelitis
NMO- Neuromyelitis optica
Acute Demyelinating Encephalomyelitis is a monophasic inflammation which often proedes infection and is most common in which age category?
Children
What are the 3 main types of generalised seizures?
- Tonic clonic
- Myoclonic
- Absence
Partial (focal) seizures involve seizure discharge from a __________ part of one cerebral hemisphere.
Localised
An aura is a type of which seizure?
Simple partial
60% of complex partial seizures involve which lobe?
Temporal lobe
30% of complex partial seizures involve which lobe?
Parietal lobe
Odd epigastric sensations, auras, automatism and higher cortical function changes are signs of which type of complex partial seizures?
Temporal
25% of epilepsy patients have an underlying structural pathology such as…
Brain tumour Arterovenous malformation Cerebral infarct/ haemorrhage Cerebral VST Head injury
__________ absence seizures involve brief (seconds) loss of contact with surroundings and eyelid jerkings, and may present as learning difficulties.
Typical
Atypical ________ seizures are commoner than typical absence seizures, and involve longer periods of absence, tending to occur in children with prior brain injury.
Absence
Myoclonic seizures often occur at which time of day in late childhood?
First thing in the morning
What are the 2 most common differential diagnoses of epilepsy?
Syncope
Non epileptic attacks
What are the key features of Parkinsonism?
- Tremor (resting)
- Rigidity
- Bradykinesia
- Postural abnormalities
Which part of the brain is affected by Parkinsons?
Pars compacta of substantia nigra in basal ganglia
Give 4 differential diagnoses for PD?
- Essential tremor
- Drug induced parkinsonism
- Vascular parkinsonismm
- Parkinsons plus syndromes- PSP or MSA
Which drugs can cause Parkinsonism in a patient?
- Sodium valproate
- Salbutamol
- Typical antipsychotics
- Lithium
- Anti emetics
How do the symptoms of vascular parkinsonism differ to PD?
Only lower limbs and gait affected
What are the key features of Progressive Supranuclear Palsy (Parkinsons Plus)?
Falls and dementia early
Little tremor
Symmetrical rigidity
Vertical gaze palsy= limited downward eye movement
Which Parkinsons Plus syndrome has bladder and autonomic issues, impotence and ataxia?
Multiple system atrophy
Rasagiline and Selegiline are which class of PD drugs?
MAOB inhibitors
Entacapone and Tolcapone are which class of PD drugs?
COMT inhibitors
Pramipexole and Ropinirole are which class of PD drugs?
Dopamine agonists
Amantidine, Apomorphine and DBS can be used to relieve which SE of Parkinson’s drugs?
Dyskinesia
Give 4 examples of how essential tremor differs to Parkinsons tremor?
- Improved by alcohol
- Affects head, arms and voice
- Symptoms develop over years
- Symmetrical
- Often has positive family history
- Handwriting large and messy
7, Postural tremor
Out of levodopa, dopamine agonists and MAOB inhibitors, which create the most motor complications?
Levodopa
Out of levodopa, dopamine agonists and MAOB inhibitors, which has the greatest improvements in motor symptoms and activities of daily living?
Levodopa
Give 2 symptoms/ conditions that can occur if anti Parkinson medication is withdrawn suddenly.
- Acute akinesia
2. Neuroleptic malignant syndrome
If a patient with early Parkinsons has motor symptoms which impact on their quality of life, which drug should be given as first line?
Levodopa
If a patient with early Parkinsons does not have motor symptoms which impact on their quality of life, which drugs should be considered as first line?
Dopamine agonists
Levodopa
MAOB inhibitors
Which SEs should patients being started on PD medication be warned about?
Psychotic symotoms- delusions, hallucinations
Impulsivity
Dyskinesia
Excessive sleepiness
Which PD drug class can cause excessive sleepiness and sudden onset of sleep?
Dopamine agonists
Amantidine is an antiviral medication used to treat ______ in MS patients and is also used as an adjunct in treating PD.
Fatigue
Which class of PD drugs has the greatest risk of hallucinations as a SE?
Dopamine agonists
What is Lhermitte’s symptom?
Brief electric shock sensation down the limbs on flexion of the neck
What is Uthoff’s phenomenon?
Symptoms of MS tend to get worse with heat