Psychiatric aspects of neurological diseases Flashcards
Usual age of onset of symptoms of MS
20-40
Lifetime risk of MS in the UK
1 in 8000
Male:Female ratio of MS
1:2
Percentage of patients with MS who show a primary progressive course
5-10%
Percentage of patients with MS who show a relapsing remitting course
20-30%
Percentage of patients with MS who show a relapsing remitting course initially and then a secondary progressive phase
60%
Lifetime prevalence of depression among patients with MS
40-50%
MS related drugs which can cause depression
Steroids (most likely)
Baclofen
Dantrolene
Tizanidine
Beta interferon - controversial link (Interferon alpha which is not used for MS is clearly linked to depression)
Percentage chance of triggering a relapse if ECT is used for depression in MS
20%
Percentage of patients with MS with suicidal ideation
30%
Percentage of patients given steroids who develop mild/moderate mania
33%
Area of brain where lesions are often seen in patients with MS who become psychotic
Bilateral temporal horn areas
Medication which has been shown to improve cognitive function in patients with MS related cognitive impairment
Donepezil
Most common psychiatric symptom following stroke
Depression
Brain areas of stroke most commonly associated with post-stroke depression
Left basal ganglia
Left frontal lobe
Antidepressants with good evidence for post-stroke depression
Fluoxetine
Citalopram
Percentage of patients with epilepsy who have depression
30-50%
Percentage of patients with epilepsy who have panic disorder
20%
Percentage of patients with epilepsy who have psychosis
3-7%
Type of epilepsy most associated with depression
Temporal lobe epilepsy
Anti-epileptic drug associated with developing psychosis
Vigabatrin
Features consistent with pseudo-seizures rather than seizures
More likely to happen in the daytime or with others present
Less likely to sustain injuries
Side to side head movements
Prolonged seizures
Eyes kept tightly shut
Maintaining of body tone
Rapid recovery post-seizure
Ability to recall events
Crying or emotional displays
Normal post-ictal lactate and prolactin
Percentage of patients with Parkinson’s disease who have depression
40-50%
Percentage of patients with Parkinson’s disease who have euphoria
10%
Percentage of patients with Parkinson’s disease who have anxiety
50-65%
Percentage of patients with Parkinson’s disease who have psychosis (including drug related)
40%
Percentage of patients with Parkinson’s disease who have cognitive impairment without a dementia diagnosis
19%
Risk factors for Parkinson’s disease associated depression
Female sex
Young onset
Bradykinesia and gait abnormalities
Rapid disease progression
Cognitive impairment
Psychiatric symptoms associated with levodopa
Mania
Pathological gambling
Hypersexuality
Hallucinations
Percentage of patients with Parkinson’s disease who experience hallucinations
20%
Most common modality of hallucinations in Parkinson’s disease
Visual
Drugs most often used to treat Parkinson’s disease associated hallucinations
Low dose clozapine
Quetiapine
Drug most often used for Lewy Body Dementia, often seen with Parkinson’s disease
Rivastigmine
Pattern of dominance of Huntington’s disease
Autosomal dominant
Prevalence of psychiatric symptoms at the first presentation of Huntington’s disease
30%
Percentage of patients with Huntington’s disease where schizophreniform psychosis is the first presentation
3-6%
Increased risk of suicide among patients with Huntington’s disease compared to the general population
4x higher
Triplet repeat seen in Huntington’s disesae
CAG
Chromosome associated with Huntington’s disease
4
Number of CAG repeats where full penetrance for Huntington’s disease is seen
41
Number of CAG repeats where partial penetrance for Huntington’s disease is seen
36-40
Percentage of patients with Wilson’s disease with a psychiatric first presentation
20%
Percentage of patients with Wilson’s disease with cognitive impairment
25%
Percentage of patients with Wilson’s disease with depression
30%
Percentage of patients with Wilson’s disease with neurological involvement who have Kayser-Fleischer rings
95%
Percentage of patients with Wilson’s disease without neurological involvement who have Kayser-Fleischer rings
50-60%
Features of transient global amnesia
Abrupt onset
Anterograde amnesia during the attack
Normal conscious level
No focal neurological signs
Attack resolves within 24 hours
Length of time episodes of transient global ischaemia last
6-24 hours
Pathology in Fahr’s disease
Idiopathic calcium deposition in the basal ganglia
Hypointensity of the striatum
Features of Fahr’s disease in patients aged 20-40
Psychosis
Catatonia
Renal stones and polyuria
Features of Fahr’s disease in patients aged 40-60
Dementia
Choreoathetosis
Renal stones and polyuria
Most common identified cause of viral encephalitis
Herpes simplex encephalitis
Most common type of herpes simplex encephalitis
Herpes simplex type 1
Features of herpes simplex encephalitis
Sudden onset confusion, memory impairment
Seizures
Depression
Psychosis
Fever
Gold standard investigation for herpes simplex encephalitis
CSF PCR for herpes viruses
Untreated fatality rate of herpes simplex encephalitis
70%
Treated fatality rate of herpes simplex encephalitis
20-30%
Most common cause of Kluver Bucy syndrome
Herpes simplex encephalitis
Area of brain damage in Kluver Bucy syndrome
Bilateral temporal lobe damage
Features of Meige syndrome
Repetitive chin thrusting and blinking
Symptoms disappear with sleep
Symptoms present at rest and when active
Peak age of brain injury
15-24
Two types of amnesia associated with head injury
Post traumatic amnesia
Retrograde amnesia
Features of post traumatic amnesia following head injury
Anterograde amnesia
Includes the time of the injury and all the time following until normal memory resumes
Features of retrograde amnesia following head injury
Dense amnesia just prior to the head injury
Usually lasts minutes
Clinical result usually used to assess severity of a head injury
GCS at 24 hours
Length of time of post traumatic amnesia associated with mild traumatic brain injury
Less than 60 minutes
Length of time of post traumatic amnesia associated with moderate traumatic brain injury
1-24 hours
Length of time of post traumatic amnesia associated with severe traumatic brain injury
1-7 days
Length of time of post traumatic amnesia associated with very severe traumatic brain injury
> 7 days
Most common long term psychiatric feature of traumatic brain injury
Depression
Area of brain injury associated with a schizophrenia like psychosis
Left temporal
Area of brain injury associated with mania
Right temporal
Right orbitofrontal
Severity of brain injury associated with post-concussion syndrome
Mild to moderate
Inability to identify or draw objects using visual clues
Apperceptive visual agnosia
Inability to name or use objects, despite the ability to draw them
Associative visual agnosia
Type of tremor which is amplified as an object is reached
Intention/cerebellar tremor
Cognitive deficits commonly seen in patients with post-concussion syndrome
Attention deficit
Impaired processing speed
Core symptoms of post-concussion syndrome
Headache
Memory impairment
Insomnia
Common features of vascular depression
Anhedonia
Psychomotor retardation
Lack of insight
Lack of feelings of guilt seen in other types of depression
Antidepressants with the best evidence for use in post-stroke depression
Nortriptyline
Fluoxetine
Type of facial nerve palsy with forehead sparing
Upper motor neurone
Type of facial nerve palsy without forehead sparing
Lower motor neurone
Neurological condition associated with B12 deficiency anaemia
Subacute combined degeneration
Increased suicide rate in patients with Huntington’s disease compared to the general population
4x higher
Features of Ganser syndrome
Approximate answers
Clouding of consciousness
Hallucinations
Pseudo hallucinations
Motor disturbance
Anxiety
Apathy
Amnesia
Medication used to treat pathologic crying commonly seen after stroke
Citalopram
Imaging finding associated with Huntington’s disease
Caudate atrophy
Imaging finding associated with Pick’s disease
Knife blade gyri
Imaging finding associated with vascular dementia and age related changes
Multiple white matter hyperintensities
Imaging finding associated with variant CJD
Pulvinar sign
Features of Kluver-Bucy syndrome seen in herpes simplex encephalitis
Emotional blunting
Hyperphagia
Visual agnosia
Sexually inappropriate behaviour
Cause of primary Meige’s syndrome
Idiopathic
Demographic most commonly affected by Meige’s syndrome
Middle aged women
Poor prognostic factors for psychiatric morbidity after head injury
Long period of post traumatic amnesia
Long period of LOC
Older age
Chronic alcohol use
Length of time antidepressant treatment should be continued after post-stroke depression
6 months
Mean duration of post-stroke depression symptoms
34 weeks
Type of memory that remains intact in amnestic disorders
Immediate memory
Antipsychotic which is particularly prone to causing seizures and should be avoided in patients with epilepsy
Clozapine
Percentage of patients with open head injury who develop post-traumatic epilepsy
30%
Percentage of patients with closed head injury who develop post-traumatic epilepsy
5%
Time frame after a seizure when prolactin levels must be taken to investigate for true seizure activity
Within 15 minutes
Part of chromosome 4 associated with Huntington’s disease
Short arm
Risk factors for Parkinson’s disease associated dementia
Older patients
Late onset disease
Low SES
Low education
Severe EPSEs
Lifetime risk of suicide in Huntington’s disease
10-15%
Most common behavioural change seen in patients with Huntington’s disease
Lack of initiative
Drug of choice to minimise risk of seizures in patients on clozapine therapy
Sodium valproate
First generation antipsychotic most likely to cause seizures
Chlorpromazine
Features of Creutzfeldt-Jakob disease
Rapidly progressive dementia
Myoclonus
Hallucinations
Ataxia
Gait changes
Features of neuroacanthocytosis
Lurching gait with long strides
Quick, involuntary knee flexion
Seizures
Cognitive impairment
Percentage of patients with Parkinson’s disease who have dementia
40%
Percentage of patients who have delirium in the week after a stroke
30-40%
Syndrome with visual hallucinations in the context of visual impairment and without psychotic symptoms
Charles Bonnet syndrome
Eye condition most commonly associated with Charles Bonnet syndrome
Macular degeneration
Most common mental illness in patients with MS
Depression
More common direction of falls in PSP
Backwards
More common direction of falls in Parkinson’s disease
Forwards