Neurology and Mental Health Flashcards
Define Somatisation.
Communication of emotional distress, troubled relationships, and personal predicaments through bodily symptoms.
What are the signs and symptoms of somatisation?
-
Recurrent abdominal pain (peak age 9yo) → sharp and colicky
- Affects 10% of school-aged children
- Majority of cases have no organic cause
- Apley’s rule → “the further the pain from the umbilicus, the more likely the pain is of an organic nature”
- Recurrent headaches (peak age 12yo)
- Limb pain
- Aching muscles
- Fatigue
- Neurological symptoms (>12yo)
What are the appropriate investigations for somatisation?
Diagnosis of exclusion
- Full physical examination
- Full, detailed history (especially social) → school, friends and family, timeline of pain
- Can be done alone (no parents)
- Reports from school can be useful
What is the management of somatisation?
- 1st line
- Promote communication between family and child (and school if necessary)
- Pain-coping skills → i.e. relaxation techniques
- 2nd line (if 1st line fails or serious family dysfunction / impaired general functioning)
- Referral to CAMHS
What is a breath-holding attack?
Toddler is upset/angry/frustrated → cries and holds breath → goes blue, lose consciousness and goes limp
- Attacks resolve spontaneously
- Drug therapy unhelpful - manage with behaviour modification and distraction
What is a reflex anoxic seizure?
Episodes due to cardiac asystole due to vagal inhibition → child becomes pale and falls to floor ± general tonic clonic fitting → brief seizure and rapid recovery
- Triggers = pain, head trauma, cold food, fright, fever
Define Febrile Convulsion.
A seizure and fever in the absence of intracranial infection → 6m to 3yo - shouldn’t occur in older children
What are the signs and symptoms of febrile convulsion?
Brief, generalised tonic-clonic seizure on background of fever
What are the chances of epilepsy following a febrile convulsion?
- Simple febrile seizure = No brain damage → No increases risk of epilepsy
- Complex febrile seizures → focal, >15 minutes, repeated in same illness = Increased risk 4-12% of subsequent epilepsy
What are the appropriate investigations following a seizure?
- Identify any cause - if indicated
- Screen for meningitis/encephalitis
- Urine MC&S if infection source unclear
- Blood glucose
- Temperature - febrile convulsion
What is the management immediately after a febrile seizure?
- Admission for
- First febrile seizure
- <18 months old
- Diagnostic uncertainty surrounding the cause
- Complex febrile / Status epilepticus
- Currently on Abx
- Parental Education
- Not the same as epilepsy
- Simple = no further risk of epilepsy
- Complex = slightly increased risk of epilepsy
- 33-50% will have another febrile convulsion
- If recurrent = educate on how to give medication
- Continue routine immunisations
- Regular paracetamol and ibuprofen
- Do not try and cool the child
- Adequate fluid intake
- Seek advice if prolonged fever
- Not the same as epilepsy
Define Epilepsy.
A disease characterised by an enduring predisposition to generate epileptic seizures and by the neurobiological, cognitive, psychological and social consequences of the condition.
Define Seizure.
Transient occurrence of signs or symptoms due to abnormal excessive or synchronous activity in the brain.
- Focal / Partial = start in one part of the brain
- Generalised = more distributed, affect both hemispheres of the brain
What are the risk factors for epilepsy?
- Genetic predisposition
- Perinatal asphyxia
- Metabolic disorders
- Trauma
- Structural CNS abnormalities
- Complex febrile seizures
What is important to classify during a seizure?
-
Where seizures begin in the brain
- Focal
- Generalised
- Focal to bilateral
- Unknown
-
Level of awareness
- Focal aware (awareness intact)
- Focal impaired
- Awareness unknown (unwitnessed)
- Generalised (presumed to affect awareness)
-
Other features of seizure
- Focal onset:
- Motor onset → twitching, jerking, stiffening, automatisms
- Non-motor → cognitive, emotional, sensory
- Generalised onset:
- Motor → tonic (stiffening) and clonic (jerking) = “Grand Mal”
- Non-motor → absence, brief changes in awareness ± automatic/repeated movements
- Focal onset:
What are the signs and symptoms of absence seizures?
- Brief impairment of consciousness - 5-10 seconds
- Behavioural arrest or staring → interrupts normal activity
What are the signs and symptoms of tonic-clonic seizures?
- Patient falls unconscious ± Preceding aura
- Violent muscle contractions and shaking
- Eyes may roll back
- Tongue biting
- Incontinence
- Post-ictal phenomena
What are the signs and symptoms of myoclonic seizures?
- Brief arrhythmic muscular jerking movements
- Last a few seconds, sudden jerking or twitching
What is Benign Rolandic epilepsy?
- Seizures of face / upper limbs during sleep with hypersalivation and speech arrest → AKA Sylvian seizures
- Affects children aged 3-12yo seizures – outgrown at end of puberty
- Most common childhood epilepsy
What is Juvenile myoclonic epilepsy?
- Seizures usually involving neck, shoulders, upper arms, most occur after waking up
- Begin around puberty - 12-18yo
What is Progressive myoclonic epilepsy?
- Rare syndromes that combines myoclonic and tonic-clonic
- Patient deteriorates over time
What is the management of epilepsy?
- MDT management - paediatrician, neurologist, epilepsy nurse, school nurse, GP
-
Referral to Neurologist after 1st fit - for advice
- How to recognise a seizure
- Video record future seizure
- Avoid dangerous activities (i.e. swimming)
- Seek help if another seizure before referral
-
Appropriate Antiepileptic Drug Choice
- Not all children will require antiepileptics - risk vs reward
-
Appropriate AED for seizure and epilepsy type - some make the seizures worse
- Lamotrigine → exacerbate myoclonic seizures
- Carbamazepine → exacerbate absence seizures
- Monotherapy at lowest dose
-
Rescue therapy for prolonged epileptic seizures (convulsive with loss of consciousness >5 minutes)
- Buccal midazolam
- AED therapy may be discontinued after 2 years free of seizures
- Generalised
- Tonic-Clonic = Valproate
- 2nd line = lamotrigine, carbamazepine, oxcarbazepine
- Absence = Valproate or Ethosuximide
- 2nd line = lamotrigine
- Myoclonic = Valproate
- 2nd line = levetiracetam, topiramate
- Tonic-Clonic = Valproate
- Focal = Carbamazepine or Lamotrigine
- 2nd line = levetiracetam, oxcarbazepine, valproate
-
Intractable epileptics
- Ketogenic diets
- Vagal nerve stimulation
- Surgery → if well-localised structural cause
What are the sides effects of valproate?
- Weight gain
- Hair loss
- Rare idiosyncratic liver failure
What are the sides effects of carbamazepine?
- Rash
- Neutropoenia
- Hyponatraemia (SIADH)
- Ataxia
- Inducer
What are the sides effects of lamotrigine?
Steven-Johnson syndrome
What are the sides effects of levetiracetam?
Sedation - rare
Define Status Epilepticus.
- 1 epileptic seizure lasting >5 minutes
- ≥2 seizures within a 5-minute period without the person returning to normal between them
- 1 febrile seizure lasting >30 minutes
What is the management of status epilepticus?
- High-flow oxygen and Glucose
- 5 mins = IV Lorazepam or buccal Midazolam or recatl Diazepam
- 15 mins = IV Lorazepam + Call for senior help + Prepare Phenytoin
- 25 mins = ICU advice + Phenytoin (if already on = phenobarbitone) + Consider rectal Paraldehyde
- 45 mins = Rapid Sequence Induction of Anaesthesia with Thiopental/Thiopentone
What are the signs and symptoms of an extradural haemorrhage?
- Lucid interval followed by deterioration of consciousness and seizures
- Potential focal neurological signs
- Dilatation of ipsilateral pupil
- Paresis of contralateral limb
- Anaemia
- Shock
What are the signs and symptoms of skull fracture?
Associated with tear of middle meningeal artery
- Battle sign
- Racoon eyes
What are the appropriate investigations for a suspected extradural haemorrhage?
CT Head
What is the management of an extradural haemorrhage?
- Fluid resuscitation → correct hypovolemia
- Evacuation of haematoma and arrest bleeding = Neurosurgery
What are the signs and symptoms of subdural haemorrhage?
- Gradually decreasing GCS
- No lucid interval → just gradually decreasing
- Potential retinal haemorrhages
What is associated with subdural haemorrhage?
Characteristically NAI with shaking of a baby or direct trauma
What are the signs and symptoms of subarachnoid haemorrhage?
- Acute onset head pain
- Neck stiffness
- Fever
- Seizures or coma
- Rare in children → causes is often aneurysm or AVM
What are the appropriate investigations for suspected subarachnoid haemorrhage?
- Head CT
- Avoid LP → increased ICP
What is the management of subarachnoid haemorrhages?
Neurosurgery or Interventional radiology
Define Developmental Delay.
Taking longer to reach developmental milestones than would be expected for children their age.
What are the causes of developmental delay?
- Genetics – Cerebral palsy, Down’s syndrome
- Epilepsy
- Infection
- Malabsorption disorders / Eating disorders – coeliac, IBD
- Metabolic causes – hypothyroidism
- Learning difficulties – Autism, ADHD, learning disabilities
- Depression & anxiety
What are the signs and symptoms of developmental delay?
- Isolated developmental delay in one domain
- FHx of delay/syndrome
- Global delay
- Dysmorphic features
What are the appropriate investigations for suspected developmental delay?
- Metabolic, genetic, infection screen
- IQ test
- ASD or ADHD testing
What is the management of developmental delay?
- MDT – SALT, OT, PT, family counselling, behavioural intervention, educational assistance
- Manage associated conditions
- Prognosis → usually good if isolated but global delay has high association with syndromes with poor prognosis
What are the types of muscular dystrophy?
- Duchenne - most common
- Becker
- Myotonic
What is the pathophysiology of Duchenne muscular dystrophy?
- X-linked recessive - mainly affects males
- 1/3rd have de novo mutations though
- Deletion of dystrophin gene
- Connects cytoskeleton of muscle fibres to ECM through cell membrane
- Where deficient → influx of Ca2+ → calmodulin breakdown → excess free radicals → myofibre necrosis
What are the signs and symptoms of Duchenne muscular dystrophy?
- Symptoms start at 1-3yo → 5yo diagnosis → no longer ambulant by 10yo → medial life expectancy 35yo
-
Developmental delay - persistent waddling gait, language delay
- Toe-walking
- Mount stairs one-at-a-time
- Decreased tone and power
- Run slowly, tire quickly
- Affects larger muscle > smaller muscles
- Gower’s sign → the need to turn prone to rise
- Pseudohypertrophy of calves - replacement of muscle fibres by fat and fibrous tissue
- Primary dilated cardiomyopathy
What are the appropriate investigations for suspected Duchenne muscular dystrophy?
- Clinical history and examination
- Plasma Creatine kinase phosphate = elevated – due to myofibre necrosis
- EMG
- Genetic testing
- Biopsy
What are the signs and symptoms of Becker muscular dystrophy?
- Same signs and symptoms as DMD but often less severe and progresses at a slower rate
- Learn to walk a little later than usual
- Muscle cramps after exercise
- Struggle with sports at school
- As they age, they struggle with lifting objects
- Can walk into their 40s and 50s but then require a wheelchair
-
Developmental delay - persistent waddling gait, language delay
- Toe-walking
- Mount stairs one-at-a-time
- Decreased tone and power
- Run slowly, tire quickly
- Gower’s sign → the need to turn prone to rise
- Pseudohypertrophy of calves - replacement of muscle fibres by fat and fibrous tissue
- Primary dilated cardiomyopathy
What is the management of Duchenne muscular dystrophy?
No cure, often management is to alleviate the symptoms:
- Physiotherapy → to clear lungs
- Exercise → help prevent contractures
- Psychological support
- Medical:
- CPAP → weakness of intercostal muscles can cause nocturnal hypoxia → daytime headache, irritability, etc.
- Glucocorticoids → delay need for wheelchair
- Cardioprotective drugs (carvedilol) → preservation of left ventricular ejection fraction
- Surgery (PRN):
- Tendoachilles lengthening
- Scoliosis surgery
What is the pathophysiology of Myotonic muscular dystrophy?
- Autosomal dominant trinucleotide repeat disorder
- Genetic anticipation → gets worse/earlier onset as the gene is passed down generations
- Varied life expectancy - from death at neonatal age in severe forms to normal life expectancy
What are the signs and symptoms of myotonic muscular dystrophy?
- Most common adult-onset (20s to 30s) muscular dystrophy
- Muscles contract and are unable to relax
- Progressive muscle loss and weakness - smaller muscles > larger muscles - reverse of Duchenne’s
- Cataracts
- Heart problems
- Abnormal intellectual functioning
- Myotonia
Name some trinucleotide repeat disorder?
- Fragile X (CGG)
- Huntington’s (CAG)
- Myotonic dystrophy (CTG)
- Friedreich’s ataxia (GAA)
- Spinocerebellar ataxia
- Spinobulbar muscular atrophy
- Dentatorubral pallidoluysian atrophy
What are the causes of infantile spasm (west syndrome)?
- Symptomatic (any disorder causing brain damage)
- Prenatal conditions
- Genetic syndromes
- Hypoxic/ischaemic/trauma brain damage
- Congenital infections
- Idiopathic
What are the signs and symptoms of infantile spasm?
-
Spasms – sudden, rapid, tonic contraction of trunk and limb muscles with gradual relaxation over 0.5-2 seconds
- “Salam attacks” – head goes down and arms go up in the air
- Looks like ‘colic’
- Contractions last 5-10 seconds
- From gentle nodding of the head to powerful movements of the body
- Occur in clusters, usually associated with waking or before sleeping
- Psychomotor delay
- Hyperpigmented skin lesions
- Growth restriction
- Peak incidence at 3-8 months
What are the appropriate investigations for suspected infantile spasm?
EEG → hypsarrhythmia– disordered activity in the brain
What is the management of infantile spasm?
- Vigabatrin
- Corticosteroids
- Poor prognosis
What is the cause / aetiology of vasovagal syncope?
- Emotional
- Fear
- Pain
- Shock
- Sudden sounds or sights
- Orthostatic
- Prolonged standing
- Crowds
- Hot
What are the signs and symptoms of vasovagal syncope?
- Brief LOC
- Spontaneous recovery
- No signs of seizure activity
- Link to trigger
What are the appropriate investigations for suspected vasovagal syncope?
- Lying and standing BP with ECG if indicated (i.e. query cardiac cause)
- FBC (rule out anaemia ± bleeding)
What is the management of vasovagal syncope?
- Avoid triggers
- Lie down flat to avoid fainting
What is the grading system for intraventricular haemorrhage?
- Grade I – bleeding just in germinal matrix → most common; no further complications
- Grade II – intraventricular bleeding (but no enlargement)
- Grade III – intraventricular bleeding with enlargement ventricles
-
Grade IV – bleeding extends into brain tissue around ventricles
- Grade I and II are more common and have no complicsations
- Grade III and IV can lead to long-term brain injury
- Blood clots can form which can lead to secondary hydrocephalus
- 50% with progressive post-haemorrhagic ventricular dilatation → cerebral palsy in later life
What is periventricular leukomalacia?
Bilateral multiple cysts
- 80-90% risk of spastic diplegia - Cerebral Palsy
- Periventricular white matter damage → difficult to detect → if cystic lesions become evident 2-4w later on USS, there is a definite loss of white matter
What are the causes of intraventricular haemorrhage in neonates?
- More often in premature babies due to VLBW and LBW
- ECMO in preterm babies with severe RDS
- Congenital CMV infection
What are the signs and symptoms of intraventricular haemorrhage?
- Sleepiness
- Lethargy
- Apnoea
- Reduced/absent Moro reflex
- Low tone
- Tense fontanelle
What are the appropriate investigations for suspected intraventricular haemorrhage?
Trans-fontanelle USS
What is the management of intraventricular haemorrhage?
- Fluid replacement
- Anticonvulsant
- Acetazolamide (reduce CSF) ± LP
- Ventriculo-peritoneal Shunt (if hydrocephalus)
What are the types of hydrocephalus?
-
Communicating → flow of CSF is obstructed after it exits the ventricles
- Meningitis (pneumococcal, TB)
- SAH
-
Non-communicating → flow of CSF is obstructed within the ventricles
- Congenital → Aqueduct stenosis (often of cerebral aqueduct (3rd to 4th ventricles) blocked)
- Dandy-Walker malformation (4th ventricle enlarged with no outlets)
- Chiari malformation (cerebellar tonsils displaced down through foramen magnum)
- Acquired → Aqueduct stenosis
- IVH (preterm infants; grade 3 or 4)
- Tumour
- Congenital → Aqueduct stenosis (often of cerebral aqueduct (3rd to 4th ventricles) blocked)
What are the signs and symptoms of hydrocephalus?
-
Acute
- Vomiting
- Irritable
- Impaired consciousness
-
Chronic
- FTT
- Developmental delays
- Increased head circumference
- Sunset sign – eyes appear to be driven down bilaterally
- Tense fontanelle
- Increased tone
- Papilloedema
- Ataxic gait
- 6th nerve palsy
What are the appropriate investigations for suspected hydrocephalus?
- Cranial USS
- Measure head circumference
What is the management of hydrocephalus?
-
1st line = Ventriculoperitoneal shunt
- May require removal of obstruction
- Sometimes, endoscopic treatment to create a ventriculostomy is performed
- Medical = Furosemide (inhibit CSF production)
What counts as episodic and chronic migraines?
- Episodic = <15 days/month
- Chronic = ≥15 days/month
What are the signs and symptoms of tension headaches?
- Symmetrical headache
- Gradual onset
- “Tight band”
What are the signs and symptoms of migraines?
Without aura = 90% migraines
Aura = 10% migraines:
- Without aura
- 1-72hrs
- Bilateral or unilateral
- Pulsatile temporal
- GI symptoms
- Worse with physical activity
- With aura
- Aura → visual, sensory or motor
- Few hours
- FHx
- Trigger (stress, foods)
- Maybe no headache
- FHx of migraine
What are the signs and symptoms of cluster headaches?
- Unilateral (eye, side of face)
- Sharp/burning/throbbing - suicide headache
- Watery/swollen eye/face
- Occur in clusters
What are the signs and symptoms of secondary headaches?
- Visual field defects
- Gait or cranial nerve abnormalities
- Growth failure
- Papilloedema
What are the appropriate investigations for headaches?
None → unless a red flag symptom
What is the management of headaches?
- Medical education:
- Headaches are common
- No long-term harm
- Medications
- Analgesia - ibuprofen > paracetamol
-
Anti-emetics:
- 6+ = cyclizine
- 12+ = prochlorperazine, metoclopramide
- 2nd line: codeine phosphate
-
Serotonin 5HT1 agonists
- 12+ = triptans (sumatriptan)
What is the specific management of migraines?
- Assess the severity and frequency of attacks, and the impact on the patient’s life
-
Identify cause → emotional problems, general health, etc.
- Consider headache diary (8 weeks)
- Optician referral
- Consider psychiatry referral
- Weight, height, BP
- Acute Management (in 12-17-year olds):
- Step 1: Simple analgesia
- Step 2: Nasal sumatriptan - oral cannot be used in people <18yo
- Step 3: Combination nasal triptan and NSAID/paracetamol
- Consider anti-emetics
- Follow-up in 1 month
- Prophylaxis:
- Topiramate (risk of foetal malformations)
- Propranolol (not in asthmatics)
What are Tic’s.
Fast, repetitive muscle movements that result in sudden and difficult to control body jolts or sounds.
- Common, appear around 5yo, not usually serious, most disappear by adulthood
- May come and go over several years
- 1 in 3 won’t have tics as an adult, 1 in 3 have mild tics, 1 in 3 will have severe tics
What psychiatric conditions are associated with tic’s?
OCD and ADHD
What is Tourette’s?
Chronic and multiple tics → no cure
- Tics must begin before 18yo
- Must persist for longer than 1 year
- Exclude any other cause
What are the signs and symptoms of a tic disorder?
- Brought about by triggers → focussing on them can make them worse
-
Different types
- Blinking
- Clicking fingers
- Coughing / Grunting
- Repeating sound or phrase
What is the management of tic disorders?
- Self-help - sleep and stress management, don’t draw attention to tic, don’t tell child off for it
- Habit reversal therapy - learn movements to “compete” with tics, so tics can’t happen at the same time
- Exposure with response prevention / ERP - help the child get used to the unpleasant sensations
- Medications:
- 1st line = antipsychotics
- 2nd line
- Clonidine – treat tics and ADHD at the same time
- Clonazepam
- Tetrabenazine – treats tics that are caused by an underlying condition (i.e. Huntington’s)
- IM Botulinum toxin – only last <3m
- Surgery = deep brain stimulation therapy (for severe Tourette’s syndrome)
Describe Neurofibromatosis Type 1.
- Autosomal Dominant Mutation in NF1 gene – 50% are a de novo mutation
- High penetrance with variable expression
- 1 in 3,000 live birth
What is the difference between neurofibromatosis type 1 and 2?
- Like NF1 but more internal/hidden signs
- Less common
- Presents in adolescence
- Bilateral acoustic neuromas ± Deafness
- Cerebellopontine angle syndrome with facial nerve paresis
- Cerebellar ataxia
What conditions are associated with neurofibromatosis?
- MEN2
- Phaeochromocytoma - VHL, MEN2
- Pulmonary HTN
- RAS with HTN
What are the signs and symptoms of neurofibromatosis type 1?
-
≥6 café au lait spots - >5mm pre-puberty, >15mm post-puberty
- Cutaneous features more prominent after puberty
- >1 neurofibroma – firm nodular overgrowth of nerve
- Axillary freckles
- Optic glioma ± visual impairment
- One Lisch nodule – hamartoma of iris (on slit-lamp exam)
- Bony lesions from spheroid dysplasia ± eye protrusion
- First degree relative with NF1
Describe Tuberous Sclerosis.
Rare genetic condition causing mainly benign tumours to develop in different parts of the body
- Genetic mutation in TSC1 or 2 genes
- 1 in 9,000, AD → 70% new mutations
What are the signs and symptoms of tuberous sclerosis?
- Cutaneous
- Woods lamp → Ash patch
- Shagreen patches
- Angiofibromata
- Neurological
- Infantile spasms
- Developmental delay
- Epilepsy
- Intellectual disability → often with ASD
- Nodules → subependymal giant cell astrocytoma → non-communicating hydrocephalus
- Subungual fibromata
- Dense white areas on retina
- Rhabdomyomata of heart
- Angiomyolipoma
What are the appropriate investigations for suspected tuberous sclerosis?
- CT scan → calcified subependymal nodules and tubers from 2+ years
- MRI
What is Sturge-Weber syndrome?
Sporadic haemangiomatous facial lesion (port-wine stain) disorder in distribution of the trigeminal nerve
- Lesion intracranially = ipsilateral leptomeningeal angioma
- Ophthalmic division of trigeminal nerve always involved
What are the signs and symptoms of Sturge-Weber syndrome?
- Haemangiomatous facial lesion (port-wine stain)
- Epilepsy (may benefit from hemispherotomy)
- Intellectual disability
- Contralateral hemiplegia
- Glaucoma (50%)
- Phaeochromocytoma
What are the appropriate investigations for suspected Sturge-Weber syndrome?
MRI