Reactive psychosis: a classical category nearing extinction?

First-episode psychotic disorders in the wake of the COVID-19 pandemic: a descriptive review of casereports

OBJECTIVE

Since the onset of COVID-19 pandemic, many case reports and case series dealt with new-onset psychotic disorders in patients either infected with SARS-CoV-2 or thematically linked to the pandemic, but without an infection. Our aim was to provide a comprehensive collection of these reports to illustrate the nature of these psychoses.

METHODS

We conducted a literature search in MEDLINE, Embase, PsycINFO, using search terms regarding first-episode psychotic disorders in the context of corona.

RESULTS

96 case reports or case series covering 146 patients (62 without and 84 with SARS-CoV-2 infection) were found. Compared to patients without infection, patients with infection showed significantly more often visual hallucinations (28.6% vs 8.1%), confusion (36.9% vs 11.3%), an acute onset of illness (88.5% vs 59.6%) and less often depression (13.1% vs 35.5%) and a delusional content related to the pandemic (29.5% vs 78.3%). Both groups had an equally favourable outcome with a duration of psychosis ≤2 weeks in half and full remission in two-thirds of patients. In patients with infection, signs of inflammation were reported in 78.3% and increased CRP in 58.6%. While reports on patients with infection are continuously published, no report about patients without infection was found after July 2020.

CONCLUSION

Cases without infection were considered reactive and originated all from the first wave of the corona pandemic. In cases with infection, inflammation was considered as the main pathogenetic factor but was not found in all patients. Diagnosis was impeded by the overlap of psychosis with delirium.

'I can see clearly now': clarifying the role of psychiatry in global disaster

OBJECTIVE

First, to review the principles and practice of disaster psychiatry, in light of recent global events. Second, to identify opportunities for research.

METHOD

A literature review of the MEDLINE database, UpToDate and the Cochrane Library was conducted. Reference lists were also reviewed.

RESULTS

Psychiatrists are well-positioned to contribute to positive outcomes at all stages of the disaster response. These contributions derive from their roles as doctors, mental illness specialists and clinical leaders.

CONCLUSION

A novel framework for the psychiatrist's contributions was proposed. Specific knowledge of disaster psychiatry may be worthwhile, and establishment of a public disaster psychiatry centre is reasonable. Research should further examine the role of tele-psychiatry and pursue a best practice for community and front-line employee psychological preparedness.

Clinical and serotonergic predictors of non-affective acute remitting psychosis in patients with a first-episode psychosis

OBJECTIVE

The study aimed to establish clinical predictors of non-affective acute remitting psychosis (NARP) and assess whether these patients showed a distinct serotonergic profile.

METHOD

First-episode never treated psychotic patients diagnosed of paranoid schizophrenia (n=35; 21 men and 14 women) or NARP (n=28; 15 men and 13 women) were included.

RESULTS

NARP patients showed significantly lower negative symptomatology, better premorbid adjustment, shorter duration of untreated psychosis, more depressive symptomatology and a lower number of 5-HT2A receptors than the paranoid schizophrenia patients. In the logistic regression, the four variables associated with the presence of NARP were: low number of 5-HT2A receptors; good premorbid adjustment; low score in the item 'hallucinatory behaviour' and reduced duration of untreated psychosis.

CONCLUSION

Our findings support the view that NARP is a highly distinctive condition different from either affective psychosis or other non-affective psychosis such as schizophrenia, and highlight the need for its validation.

Reactive psychosis and other brief psychotic episodes

Modern classification systems have ignored the reactive psychoses, and little has been published using this concept during the last years. Nevertheless, the term is of interest in clinical practice where its presence is dependent on clinical skills and empathy. It is also important for a general understanding of the development of psychosis. The delineation from other acute psychoses needs clarification. Studies on reliability and validity are promising, but need extension. Traditionally, the concept of reactive psychosis has hardly been used outside Scandinavia, and it is encouraging that interest in brief psychoses seems growing in other cultures as well.