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Mental Health

Acute and transient psychotic disorder (ATPD)

Characterized by acute onset of psychotic symptoms that emerge band reach their maximal severity within 2 weeks.

  • Associated with recurrent episodes (35–45% cases)

Classification

International Classification of Diseases (ICD) classification:

ICD-10 code Diagnostic subcategory of ATPD (F23) Duration, months
F23.0 Acute polymorphic psychotic disorder without symptoms of schizophrenia <3
F23.1 Acute polymorphic psychotic disorder with symptoms of schizophrenia <1
F23.2 Acute schizophrenia-like psychotic disorder <1
F23.3 Other acute predominantly delusional psychotic disorders <3
F23.8 Other acute and transient psychotic disorders <3
F23.9 Acute and transient psychotic disorders, unspecified <3

Clinical features

Symptoms typically change rapidly, both in nature and intensity, from day to day, or even within a single day. The duration of the episode does not exceed 3 months, and most commonly lasts from a few days to 1 month.

  • Delusions, hallucinations, disorganization of thought processes, perplexity or confusion, and disturbances of affect and mood.
  • Catatonia-like psychomotor disturbances

 

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