The neuropsychiatric ramifications of severe COVID-19 infection appear to be no different than for other severe acute respiratory infections (SARI).
This suggests that disease severity, rather than pathogen, is the most relevant factor in new-onset neuropsychiatric illness, the investigators note.
The risk of new-onset neuropsychological illness after severe COVID-19 infection are “substantial, but similar to those after other severe respiratory infections,” study investigator Peter Watkinson, MD, Nuffield Department of Clinical Neurosciences, University of Oxford, and John Radcliffe Hospital, Oxford, England, told this news organization.
Dr. Peter Watkinson
The study was published online in JAMA Psychiatry.
Significant mental health burden
Research has shown a significant burden of neuropsychological illness after severe COVID-19 infection. However, it’s unclear how this risk compares to SARI.
To investigate, Dr. Watkinson and colleagues evaluated electronic health record data on more than 8.3 million adults, including 16,679 (0.02%) who survived a hospital admission for SARI and 32,525 (0.03%) who survived a hospital stay for COVID-19.
Compared with the remaining population, risks of new anxiety disorder, dementia, psychotic disorder, depression, and bipolar disorder diagnoses were significantly and similarly increased in adults surviving hospitalization for either COVID-19 or SARI.
Compared with the wider population, survivors of severe SARI or COVID-19 were also at increased risk of starting treatment with antidepressants, hypnotics/anxiolytics, or antipsychotics.
When comparing survivors of SARI hospitalization to survivors of COVID-19 hospitalization, no significant differences were observed in the postdischarge rates of new-onset anxiety disorder, dementia, depression, or bipolar affective disorder.
The SARI and COVID groups also did not differ in terms of their postdischarge risks of antidepressant or hypnotic/anxiolytic use, but the COVID survivors had a 20% lower risk of starting an antipsychotic.
“In this cohort study, SARI were found to be associated with significant postacute neuropsychiatric morbidity, for which COVID-19 is not distinctly different,” Dr. Watkinson and colleagues write.
“These results may help refine our understanding of the post–severe COVID-19 phenotype and may inform post-discharge support for patients requiring hospital-based and intensive care for SARI regardless of causative pathogen,” they write.