Psychosis Flashcards
What is psychosis?
Difficulty perceiving and interpreting reality
What are the different types of psychotic disorder?
- schizophrenia
- schizoaffective disorder
- bipolar type I
- delusional disorder
- substance-related psychosis
- due to other medical conditions
What is schizophrenia?
significant alteration in perception, thoughts, mood and behaviour
What are the risk factors for schizophrenia?
- family history, highly heritable and polygenic
- cannabis use
- prenatal/birth complications
- maternal infections
- migrant status
- socioeconomic deprivation
- childhood trauma
What 3 domains are symptoms classed into?
- Positive symptoms
- Negative symptoms
- Disorganisation
What is a hallucination?
- perceptions in the absence of a stimulus
- audiotry (voices), visual, somatic or olfactory
What is a delusion?
- Fixed, false beliefs, out of keeping with social/cultural background
- persecutory, grandiose, religious, mind reading, thought broadcasting, insertion, withdrawal
What are positive symptoms?
- An aspect added onto their usual perception/experience
- hallucinations and delusions
What are negative symptoms?
The loss of an aspect of perception of day to day living
The 4As of negative symptoms?
- Alogia
- Anhedonia/asociality
- Avolition/apathy
- Affective flattening
What are disorganisation symptoms?
- Bizarre behaviour
- Thought Disorders
What is the onset of psychosis?
- can occur at any age
- peak incidence in adolescence (early 20s)
- tends to peak later in women
What is the course of psychosis?
- Often chronic and episodic
- Very variable (person to person)
What is the morbidity of psychosis?
Substantial
- both from the disorder and increased risk of common health problems
- Large impact on education, employment and functioning
What impact does psychosis have on mortality?
Substantial
- loss of 15 years from life expectancy
- High risk of suicide in schizophrenia - 28% (in excess)
What should you know about previous hospital admissions for patients with psychosis?
Whether the patient consented to the admission or was detained by the mental health act
What should you ask in a family history of a patient with psychosis?
- Mental disorders in the family
- History of abuse, addiction, suicide
- At home environment
- Family relationship
Which drugs increase the risk of psychosis?
Cannabis
Impact of steroids on mental health?
Very large and significant possible impact
Corroborative history? DELETE
- Needs consent to divulge
- Informants
What does a mental state examination assess?
- Appearance + Behaviour
- Speech
- Mood
- Thoughts
- Perceptions
- Cognition
- Insight
How to determine if there is pressure of speech?
If you cannot interrupt them while they’re speaking
What comes first in psychotic depression?
- The extreme depression causes the psychosis
- unable to be challenged
When should a cognition exam be done during a psychotic episode?
treat them first, then assess cognition
What is involved in the long term management of psychosis?
- community follow up
- managing anti-psychotic side effects
- health promotion/education