Acute Psychosis

Lifetime prevalence 3%, most often due to recreational drugs
History ➥ Duration/onset
➥ Character of psychosis/behavioural changes
➥ PMH - medications, recent infective s/s,
➥ DHx: recreational drug use, OTC
➥ Ask about alcohol + recreational drugs
➥ Ask about suicide, self-harm risk
Examination Mental State Examination
Neurological o/e?
Diagnostic investigations Any suspicion of intracranial shenanigans → LP, brain imaging
Check glucose, STI testing?
Differentials autoimmune badness e.g. autoimmune encephalitis, paraneoplastic
Immediate management - Management of Acute behavioural disturbance
Ongoing management