11. Psychotic disorders Flashcards
psychosis
symptoms in which there is misinterpretation and misapprehension of the nature of reality
disturbances of perception (hallucination)
disturbances of belief and interpretation of the environment (delusions)
disorganised speech patterns (thought disorder)
delusions
beliefs that are held with great conviction even in the face of overwhelming evidence to the contrary and are not shared by members of the patient’s own culture or subcultures
hallucinations
false perceptions
content of delusions
persecutory
referential
grandiose
erotomanic
nihilistic
somatic
discussion of delusions
bizarre?
mood congruent?
how pervasiive is the delusion?
how firmly entrenched is the delusion?
hallucinations
most common are auditory (voices arguing, commenting, running commentary, audible thoughts, thought echo)
visual (formed, unformed)
pseudohallucinations- sometimes used to indicate presence of insight
psychotic disorders
schizotypal PD
delusional disorder
brief psychotic disorder
schizophreniform disorder
schizophrenia
schizoaffective disorder
substance/medication induced psychotic disorder
psychotic disorder due to another medical condition
variations in catatonia
dual diagnosis
up to half have SUD
frequent premorbid cannabis use increases risk for developing schizophrenia
maintain or cause symptoms, lead to relapse, poor adherence to treatment
distal risk factors for psychosis onset
maternal pregnancy complications
family history of psychotic disorder
candidate genes
developmental delay
ethnic minority
quality of early rearing environment
trauma
vulnerable personality
proximal risk factors for psychosis onset
age
urbanicity
substance use
traumatic head injury
stressful life events
subtle impairments in cognition
poor functioning
cognitive, affective, and social disturbances subjectively experienced by the individual
migration
psychosis aetiology
usually emerges in late adolescence or early adulthood
psychosis typical pathway
impaired social functioning and some neurotic symptoms
exacerbation of symptoms into subthreshold psychotic symptoms
first episode psychosis
interventions- premorbid phase
Clinical stage 0, increased risk of psychosis no current symptoms
indicated prevention of FEP:
improved mental health literacy
family education
drug education
brief cognitive skills training
interventions- possible prodrome
Clinical stage 1a, mild or non specific psychosis symptoms
indicated secondary prevention of FEP:
formal mental health literacy
family psychoeducation
CBT
actively reduce substance use
interventions- possible prodrome
Clinical stage 1b, ultra high risk of psychosis
indicated secondary prevention of FEP:
psychoeducation
CBT
substance use work
omega 3 fatty acids
antidepressant agents or mood stabilisers
common signs among young people of an ‘at risk’ mental state
neurotic symptoms: anxiety, restlessness, anger, irritability
mood related symptoms: depression, anhedonia, guilt, suicidal ideas, mood swings
changes in volition: apathy, loss of drive, boredom, loss of interest, fatigue, reduced energy
cognitive changes: disturbance of attention and concentration, preoccupation, daydreaming, thought blocking, reduced abstraction
physical symptoms: somatic complaints, weight and appetite loss, sleep disturbance
attenuated or subthreshold psychotic symptoms: perceptual abnormalities, suspiciousness, change in self, others or the world
other symptoms: obsessive compulsive phenomena, dissociative phenomena, increased interpersonal sensitivity
behavioural changes: deterioration in role functioning, social withdrawal, impulsivity, odd behaviour, aggressive, disruptive behaviour
assessment- possible prodromal state/risk for first episode
interview and observation of at risk symptoms
Bonn scale for the assessment of basic symptoms
schizophrenia prediction instrument- adult version
comprehensive assessment of at risk mental states (caarms)
schizophrenia proneness instruments (children and adolescents)
benefits of early intervention
potential prevention or delay in transition to psychosis
facilitating engagement in services before too ‘out of touch’
reduction in psychosocial disability, especially vocationally
pre-existing engagement with services may increase treatment adherence in a later psychotic episode
reduction in severity of psychotic episode by early identification
Treatment- acute and early recovery
clinical phase 2, first episode of psychotic disorder
early intervention for FEP
Psychoeducation
CBT
Substance use work
SGA medication
antidepressant agents or mood stabilisers
vocational rehabilitation
Treatment- late/incomplete recovery
clinical phase 3a, incomplete remission from first episode of care
early intervention for FEP
As for stage 2, but with additional emphasis on medical and psychosocial strategies to achieve remission