Long-COVID refers to the lingering or protracted illness long after the acute illness. Depression, anxiety, fatigue, concentration and cognitive impairment appeared to be reported often in long COVID, psychosis seemed uncommon. Neuropsychiatric disorders in long COVID could be a consequence of direct viral insult on the central nervous system (CNS), continuous neuroinflammation, or neurodegeneration and metabolic impairment following the cerebral vascular accidents, or hypoxia from pulmonary damages and fibrotic changes. It is important to know how patients with various disorders, not only neuropsychiatric disorders, thrive under long COVID. How much the neuropsychiatric disorders reported in long COVID are stress related in nature, due to prolonged quarantine and social isolation, would also be important to study. Patients with diabetes are already known to have a higher risk of mortality and morbidity in COVID-19. How brain glucose metabolism may contribute to the neuropsychiatric symptoms in long COVID is an important area for COVID-19 research. Patients on psychotropics often asked their clinicians about potential conflicts of their medications with anti-COVID 19 vaccinations, or whether it would increase their vulnerability to COVID-19 viral infection. Thus, early reports of protective effects of psychotropics against COVID-19 need to be validated. Some antidepressant and antipsychotic agents indeed possess significant affinities for the sigma-1 and histamine receptors. This, with the earlier reports of reduced number of sigma-1 receptors in post- mortem schizophrenic brains and the reported roles of sigma and histamine receptors in neuroinflammation and viral infections, may point to an important and novel direction for drug discovery against COVID-19. Literature and data in all these areas are accumulating at a fast rate. We reviewed and discussed the relevant and important literature.

Long covid, neuropsychiatric disorders, psychotropics, present and future.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8813760

Mortality from coronavirus disease 2019 (Covid-19) in patients with schizophrenia: A systematic review, meta-analysis and meta-regression

http://www.cell.com/article/S2405844023036277/pdf

Increased suicide rates in Mexico City during the COVID-19 pandemic outbreak: An analysis spanning from 2016 to 2021

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10116153

Antipsychotics modified COVID-19 prevalence in hospitalized patients diagnosed with mental illnesses

Background Increased coronavirus disease 2019 (COVID-19) incidence and mortality in hospitalised patients with psychiatric and neurologic disorders have been reported. Methods The clinical records of 198 patients with psychiatric and neurological disorders hospitalised in the Dr Rafael Serrano Psychiatric Hospital in Puebla during the peak of the first wave of the COVID-19 pandemic in Mexico were analysed for psychiatric or neurologic diagnosis, gender, age, medical diagnosis, and COVID-19 prevalence. For patients with COVID-19, the effects of gender, and medical diagnosis were explored. Results There was an increased COVID-19 prevalence in the studied population (43.94%), compared with the national Mexican (~0.21% to 0.63%) and worldwide average in the general population (~0.13% to 4.28%). However, the mortality rate (5.75%) was lower than that reported in Mexico (11.28%-13.55%), which was higher than the worldwide average (2.95%-4.98%). We detected increased COVID-19 prevalence in patients with comorbidities (odds ratios [OR] 0.4; 95% CI: 0.2-1, P = .0447). Moreover, patients with schizophrenia spectrum disorders have a decreased predisposition to COVID-19 (OR 0.4, 95% CI: 0.2-0.8; P = .0250), as opposed to patients with intellectual disability that are predisposed to COVID-19 (OR 2.2, 95% CI: 0.2-0.8; P = .0434), in comparison with the rest of the hospital population. Conclusion The prevalence of COVID-19 in hospitalised patients with psychiatric disorders is increased compared with that of the general population; however, a lower mortality rate was detected. Also, an increased risk of COVID-19 was detected in patients with comorbidities. Interestingly, the observed variation in COVID-19 prevalence in patients with schizophrenia and intellectual disability was not associated with age or other specific medical diagnoses.

Patients with schizophrenia have decreased COVID-19 prevalence among hospitalised patients with psychiatric and neurological diseases: A retrospective analysis in Mexican population.

Guillermo Loaiza

Papers

Patients with schizophrenia have decreased COVID-19 prevalence among hospitalised patients with psychiatric and neurological diseases: A retrospective analysis in Mexican population.

Antipsychotics modified COVID-19 prevalence in hospitalized patients diagnosed with mental illnesses