Psychosis Flashcards
Psychosis
A state in which there is a loss of contact with reality Includes: Delusions Hallucinations Formal thought disorder
Prevlance psychosis
1/100
When is the peak incidence of psychosis in males?
23 y/o
When is the peak incidence of psychosis in females?
26
2nd peak 30-40
Biological aetiology schizophrenia (2)
FHx
Idenitcal twins - 46%
Obstetric complication
Psychological aetiology schizophrenia
Congitive errors
Premorbid personality - schizotypal disorder
Social aetiology schizophrenia (4)
Urban living
Migration
Life events incl physical + sexual abuse
Ethnicity - Afro-Caribbean
Prodrome
Period of time when the individual = gradually developing Sx but has not yet met criteria for diagnosis
What is the average DUP?
> 1
Good prognostic factors psychosis (8)
Female Married FHx affective disorder Acute onset Good premorbid personality Early Tx prominent mood Sx good response to Tx
Poor prognostic factors psychosis (6)
FHx schizophrenia High expressed emotion Substance misuse Prominent negative Sx Early onset Lack of insight/non-compliance
What are the 3 groups of schizophrenia symptoms?
Positive
Negative
Motor/catatonic
E.g.s of positive schizophrenia Sx (3)
Formal thought disorder
Hallucination
Delusion
E.g.s of negative schizophrenia sx (7)
Anhedonia Blunting of affect Apathy Lack of volition - under control Poverty of thought Poor self-care Cognitive deficits
E.g.s of motor/catatonic schziophrenia Sx (7)
Rigidity Posturing Mutism Waxy flexibility Negativism Stereotypies Tics
What is rigidity
Maintaining a fixed position and rigidly resisting all attempts to be moved
What is posturing
Adopting an unusual position that is then maintained for some time
What is waxy flexibility
patients can be moulded like wax into a position that is then maintained
What is negativisim
A seemingly motiveless resistance to all instructions/attempts to be moved
What is stereotypies
A complex movement that does not appear to be goal-directed e.g. rocking
Perception
The process of making sense of the physical information we receive from our 5 sensory modalities
Illusions
Misperceptions of real external stimuli
Delusion
A fixed, usually false unshakable belief which is out of keeping with patients educational, cultural and background + held despite all evidence to contrary
Persecutory delusion
Delusional belief that one’s life is being interfered with in a harmful way
Delusion of reference
Delusional belief that external events have been arranged so that a messaged is conveyed
Grandiose delusions
Delusional belief that the patient has special powers
Primary delusions
Do not occur in response to any previous psychopathologies state
Mood congruent delusions
Contents are appropriate to patients mood
De-Clerambault’s syndrome
Delusion where the patient believes another individual is in love with them and they are destined to be together
Capgras syndrome
Patient is replaced by an identical double’ who is not the real person
Cotard syndrome
Psychotic depressive presentation with nihilistic delusions and hypochondriacal disorder
Fergoli syndrome
Strangers have been replaced by one familiar person who changes appearance or takes on disguises
Nihilistic delusion
Patient believes they have died or no longer exists or the world has ended
Delusion perception
A real percept that leads immediately to a delusional belief - the traffic lights turned red and I knew I was the King of England’