Neuro Flashcards
red flags for headaches
Easier to do this in reverse
>50 SAH - FND, meningism, thunderclap SOL - ICP, FND Meningitis - fever, meningism Cluster - horner's GCA - jaw claudication, scalp tenderness Migraine - FND Personality ∆ - frontal lobe stroke
Migraine Aetiology Presentation Investigations Management
Aetiology Chocolate Hangover OCP Cheese/caffiene Orgasm Lack of sleep Alcohol Travel Exercise
Presentation Unilateral Throbbing <72 hrs Parasthesia Photophobia Phonophobia Allodynia N+V FND Can have aura - flashing lights etc
Investigations Clinical Ophthalmoscopy! BP H+N exam
Management Attack - NSAIDS - Sumatriptan Metoclopramide for antiemetic
Prevention
- Propranolol
- Amitriptylline
- Topiramate
- Acupuncture
- Riboflavin in pregnancy
COCP CONTRAINDICATED
Sumatriptan CI
HTN
SSRI
IHD
Tension headache Aetiology Presentation Investigations Management
Aetiology
Stress, dehydration, neck pain, lack of sleep
Presentation Bilateral Mild- moderate Up to 1 week Tension type pain / pressing
Investigations
Clinical diagnosis
Management
Sleep hygiene etc
Attack - NSAIDS/ aspirin
Prevention
- TCA
- Acupuncture
Cluster headache Aetiology Presentation Investigations Management
Aetiology Males Stress Alcohol/ smoking Exercise Heat
Presentation Sudden onset Stabbing nature Acute attacks - last 15 - 180 mins usually periorbital Associated symptoms - Horner's syndrome - Lid swelling - Lacrimation - Rhinorrhoea - Facial flushing
Investigations
- Refer to specialist
- Optic assessment
Management
Attack
- O2 and sumatriptan
Prevention
- Verapamil
- Topiramate
- Prednisolone
Trigeminal neuralgia Aetiology Presentation Investigations Management When to refer
Aetiology
Associated with MS
Presentation
- Worse on innoculus stimuli - touching the face
- Electric shock like pain
- Often in V2
- Uop to 100 attacks per day - lasts 1-180 seconds
Investigations
- Optic assessment
- H+N exam
- CT - rule out MS
Management Carbamazapine Other - Lamotrigine - Phenytoin - Gabapentin - Surgical decompression
When to refer FHx of MS <40 Optic symptoms Sensory ∆ Optic neuritis
GCA Aetiology Presentation Investigations Management Complications
Aetiology
Presentation Sudden onset Orbital/temporal region Jaw claudication Scalp tenderness Amuorosis fugax --> blindness Associated with polymyalgia rheumatica - so proximal weakness think GCA B symptoms
Investigations Bloods - ESR/CRP^ - ALP^ - Platelets ^ - Hb - low
Dolour duplex scan
Temporal artery biopsy = GS - granulomatous lesions - can have SKIP lesions
Management
Prednisolone
Low dose aspirin
Bisphosphonates + PPI
Complications
BLINDNESS - think if optic symptoms - urgent referral
Aneurysm/ CVA
SAH Aetiology Presentation Investigations Management Complications
Aetiology Aneurysm Ant comm + ACA MCA bifurcation Post comm and ICA PKD HTN CoA Ehler danlos
Presentation Can have warning leak signs - visual ∆, sensory ∆ Thunderclap headache - worst ever FND Meningism Vomiting LOC CN III palsy (post comm)
Investigations
- CT - star shaped lesion hyperdense - in basal cistern
- Hyponatraemia
- LP ^protein and xanthachromia
- ECG ∆ long QT etc
- EYES - intraocular haemorrhages, loss of light reflex
Management
- Endovascular coiling
- Rx hyponatramia/ monitor
- Nimodipine
- VP shunt if ICP^
Complications REBLEED - 20% Stroke from vasospasm Hyponatraemia Sympathetic - ^^^HTN, cardiac arrest
Investigations for SAH
CT - star shaped lesion in basal cistern
LP - xanth + Protein ^
ECG ∆ - 12hrs after (long QT, ST elevation)
EYES
- loss of light reflex
- intraocular haemorrahge
Sub dural haematoma
Aetiology
Presentation
Investigations
Management
Aetiology Alcohol Elderly Shaken baby Tearing of the bridging veins
Presentation
Head trauma –> lucid interval of up to 9 months –> LOC/ personality ∆/ ∆ consciousness/ headache
Investigations
CT - convex lesion - does go beyond suture lines
Management
Burr holes
Craniotomy
If chronic (darker region) and no symptoms can manage conservatively
Sub-acute - chronic but then got oedema –> ^ICP
Extradural haematoma
Aetiology
Presentation
Investigations
Management
Aetiology
Hit on da pterion
MMA rupture
dural venous sinuses
Presentation
Trauma - lucid interval (can be hours) –> LOC
SKull frac symptoms - CSF rhinorrhoea
Brisk reflexes, upgoing plantars
Investigations
CT - convex lesion - doesn’t cross suture lines
XR - check for skull fraccy
Management
Burr holes
Parkinson’s
Aetiology
Presentation
Aetiology - Age - FHx - Head trauma? DRUGS - metoclopramide/ neuroleptics
Cytoplasmic inclusions of alpha synucelin
lewy bodies
In the
- Substantia nigra –> loss of dopaminergic cells
Presentation CORE Bradykinesia + 1 or 2 of Tremor - 4Hz, resting, pill rolling Rigidity - cogwheel/leadpipe
Other REM sleep disorders Shuffling gait Psych - Depression - Hallucinations - Dementia Micrographia Monotone voice Expressionless face Anosmia Urinary incontinence Sexual dysfunction
Parkinsons
Investigations
∆∆
Clinical diagnosis
CT if want to rule out other causes
∆∆ Cerebellar disorders Wilson's disease LBD NPH Other causes of tremor eg hyperthyroid and salbutamol/ lithium use/ Delirium tremens tremor/ amphetamines EPSE
Drugs causing parkinson’s
Metoclopramide
Antipsychotics - EPSE!
Management of parkinson’s
Increase dopamine levels
Levodopa + dopa decarboxylase
Ropinirole
Decrease dopamine breakdown
MOA-B inhibitors - rasagiline, selegiline
COMT inhibitors - entacapone
For the tremor
Amantadine
Anticholinergic
Non pharmacological Deep brain stimulation Physio/ occy T/ S+L therapy SSRI for depression Surgical interruption of BG
Housekeeping delay start on increased dopamine drugs as they become resistant after 5-10 years Ropinirole SE - Drowsiness - Impulsivity/ inhibition disorder - N+V - Dizziness - Hallucinations
Levodopa problems
On off
wear off
freezing
NPH Aetiology Presentation Investigations Management
Aetiology
- Usually idiopathic
- Meningitis
- SAH
- Head injury
- Tumour
Presentation
WET, WHACKY, WOBBLY
Brisk reflexes
Investigations
Enlarged IVth ventricle
Management
Acetazolamide
VP shunt
Hydrocephalus Aetiology Presentation Investigations Management
Aetiology Non obstructive - NPH - Increased production Obstructive - Tumour - Bleed
Presentation
- Symptoms of raised ICP
Investigations
MRI
LP is diagnostic and therapeutic
Management
- VP shunt
Syncope
Definition
Causes
Global and transient cerebral hypoperfusion
Reflex (most common)
Vasovagal
Situational
Carotid sinus hypersensitivity
Cardiogenic - Structural Valve - eg AORTIC STENOSIS - Arrythmia BBB (R) Heart block WPWS Brugada syndrome
Orthostatic hypotension Volume depletion - Diarrhoea - Haemorrhage LBD Parkinsons Diabetic neuroapthy Drugs - Diuretics/ alcohol/ vasodilators
Syncope investigations
BP lying and standing >20/10
Cardio exam
ECG 24 hr tape
Tilt test
Others
- CT
- ECHO if suggestive features on ECG
- FBC - anaemia
- Glucose
NEAD
Aetiology
Presentation
Investigations
Management
Aetiology
RF include
someone in the fam with epilepsy
Child abuse
Presentation Pelvic thrusting Eyes closed lie still Wild jerking movements Can localise symptoms post -ictal Upset/ crying Long duration >2mins Gradual onset Attacks only when people are present
Can have tongue biting+ incontinence but rare
Investigations
Prolactin not raised
Video telemetry - can tell from the seizure that its NEAD
Management
CBT ??
Syncope v epilepsy v NEAD
re-write the table and test urself
Shite brainscape wont let me import the table
Shingles
Aetiology Presentation Investigations Management Complications
Aetiology
Re-activation of the VZV
- Immunocompromised
Age, chemo, HIV, TB, steroids
Presentation
Pre-eruptive phase
No rash but ithcing, burning, tingling in the area
Eruptive phase - red macules that are dermatomal and PAINFUL
Posst herpetic neuralgia
Investigations
N/A clinical diagnosis - can do PCR swab
REMEMBER: if >1 dermatome invovled consider ∆∆or immunocompromised
Management Acyclovir - aim to start within 72hrs Pain - Paracetamol - Gabapentin - Amytriptylline
Complications
Bells palsy as a result of VII involvement = ramsay hunt syndrome + can leave permanent motor and visual symptoms
Orbital involvement (herpes zoster ophthalmicus - V1 (+ hutchinson sign tip of nose involved - nasociliary branch) –> Blindness (need urgent referral)
Post herpetic neuralgia
Complications of shingles
HERPES ZOSTER OPHTHALMICUS
Where V1 is affected - can –> blindness - need urgent referral
Post herpetic neuralgia
Ramsay hunt syndrome - where VII is involved
Bell’s Palsy
Aetiology Presentation Investigations Management Complications
Idiopathic transient paralysis of CN VII - LMNL
Aetiology Idiopathic Infection - lyme disease, EBV Tumour - parotid (remember LMNL) Forceps delivery ^ risk in pregnancy and diabetes
Presentation
LMNL CN VII - facial paralysis with no forehead sparing
Cannot close eye so dry eye/ corneal dryness
Hyperacusis - stapedius
Taste loss ant. 2/3 tongue
Post auricular pain/ numbness
Investigations
Exam - no forehead sparing
CT if suspect tumour
Blood cultures for infection eg borellia for lyme disease
Management
Prednisolone
PROTECT THE EYE
Complications
Ramsay hunt syndrome if caused by VZV –> permanent damage
Permanent 15%
Huntington’s
Aetiology Presentation Investigations Management Complications
Aetiology
Autosomal dominant - Ch4
Trinucleotide repeat - CAG
–> GABAnergic neurone decrease -
Presentation Personality ∆ Clumsiness Chorea, tics, myoclonus Self neglect Supranuclear gaze palsy Seizures, spacticity
Psych
Apathy
Dementia
Depression
Investigations
MRI
Genetic testing
Management
Benzoes
Valproate
Terabenzene
SSRI
Antipsychotics
Complications
Depression
GBS
Aetiology Presentation Investigations Management Complications
Guillain*
Autoimmune demyelinating polymyopathy
Aetiology
Post viral
- Campylobacter jejuni
- CMV/ EBV
Presentation Ascending weakness Areflexia Autonomic - arrythmias, urinary retention, tachycardia Abnormal eye Parasthesia can occur NOT painful Remember resp depression
Investigations Nerve conduction studies Anti-ganglioside ECG Spirometry LP - ^Protein
Management
IV IG
Plasmapheresis
VTE prophylaxis
Complications
Resp depression –> death
Presentation of GBS
Guillain
It is SYMMETRICAL AAAA Ascending weakness - proximal Areflexia Autonomic - arrhythmia, urinary retention, tachycardia Abnormal eyes - diplopia Parasthesia Resp depression
Investigations for GBS
Guillain
Nerve conduction studies (GS)
Anti-ganglioside antibodies
LP ^ protein
Spirometry monitoring
ECG - arrhythmia monitoring
MS
Aetiology Presentation Investigations Management Complications
Aetiology/ epidemiology F>M 20-40 Far from equator Previous mononucleosis Autoimmune demyelination
Presentation EYES Optic neuritis Internuclear ophthalmoplegia Optic atrophy
MOTOR
Spastic weakness
SENSORY
Trigeminal neuralgia
Lhermitte’s shocks
Numbness
UROGEN
Sexual dysfunction
Urinary incontinence
CEREBELLAR
- Ataxia
- Tremor
Uhthoff’s phenomenon
Can have cognitive impairment
Investigations
- MRI - 2 lesions disseminated in time and space
- Anti MOG antibodies
- Oligoclonal bands
Management
Acute
- Methylprednisolone
Chronic
Interferon/ galantamir
Natalizumab
Beta blocker - for tremor
alentuzumab
Investigations for MS
MRI - 2 lesions disseminated in time and space
LP - oligoclonal bands
Bloods - anti MOG antibodies
Presentation of MS
EYES
Optic neuritis
Intranuclear ophthalmoplegia
Optic atrophy
MOTOR
Spastic weakness
SENSORY
Lhermitte’s shock
Trigeminal neuralgia
Numbness
CEREBELLAR
Ataxia
Tremor
UROGEN
Seuxal dysfunction
Urinary retention
Can have cognitive impairment
MS
Investigations + management
Investigations
- MRI 2 lesions disseminating in time and space
- Anti MOG antibodies
- LP - oligoclonal bands
Management
Acute
methylprednisolone
Chronic - Interferon/galantamir - Natalizumab Other muscle relax - baclofen reduce tremor - BB
Types of MS
Relapsing and remitting
Primary progressive
Secondary progressive
Myasthenia gravis
Aetiology Presentation Investigations Management Complications
WEAKNESS AND FATIGUABILITY
Aetiology
Antibodies to Ach receptors
Assocaited with thyroid/addisons/parkinsons/thymoma
Presentation weakness and fatiguability voice trails off + cant walk up the stairs + struggle watching TV Myasthenic snarl Peek sign
EYES
- Diplopia
- Ptosis - better on ice
BULBAR Dysphagia Dysphasia Dysphonia Difficulty chewing
reflexes normal
Proximal weakness
Investigations Electromyography - decreased evoked potentials AntiMuSK antibodies AntiAchR antibodies CT thymoma Spirometry
Management
Pyridostigmine
Other - steroids/azathioprine
Complications
- Resp
Exacerbations
- Drugs - BB, opioids, lithium, gent
- Pregnancy
- Infection
Myasthenia gravis
aetiology
autoimmune to AchR Associated with Thyroid Thymoma Addisons Parkinsons
MG
presentation
WEAKNESS AND FATIGUABILITY
EYES
- diplopia
- ptosis - better on inte
BULBAR
- dysphagia
- dysphasia
- dysphonia
- difficulty chewing
voice trails off etc
snarl sign
peek sign
MG
investigations
Electromyography - decreased evoked potentials CT thymoma Bloods - Anti MuSK - Anti AchR
MG
management
pyridostigmine
Other
- steroids/ azathioprine