Contents
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