Covid patients at increased risk of psychiatric conditions after two years, says study : The Tribune India

Covid patients at increased risk of psychiatric conditions after two years, says study

The increased risk of depression and anxiety in adults lasts less than two months before returning to rates comparable to those after other respiratory infections

Covid patients at increased risk of psychiatric conditions after two years, says study

Photo for representation. Tribune

PTI

London, August 18

Increased risk of neurological and psychiatric conditions such as dementia and seizures is still higher two years after covid-19 compared to other respiratory infections, suggests an observational study of over 1.25 million patient health records published in The Lancet Psychiatry journal.

The increased risk of depression and anxiety in adults lasts less than two months before returning to rates comparable to those after other respiratory infections. Since the covid-19 pandemic began, there has been growing evidence that survivors might be at increased risk of neurological and psychiatric conditions.

A previous observational study by the same research group reported that covid-19 survivors are at increased risk of several neurological and mental health conditions in the first six months after infection.

However, until now, there have been no large-scale data examining the risks of these diagnoses over a longer time period.

"In addition to confirming previous findings that covid-19 can increase the risk for some neurological and psychiatric conditions in the first six months after infection, this study suggests that some of these increased risks can last for at least two years," said Professor Paul Harrison, from the University of Oxford, UK.

"The results have important implications for patients and health services as it suggests new cases of neurological conditions linked to covid-19 infection are likely to occur for a considerable time after the pandemic has subsided," Harrison, lead author of the study, said.

The study also highlights the need for more research to understand why this happens after covid-19, and what can be done to prevent or treat these conditions. The study analysed data on 14 neurological and psychiatric diagnoses gathered from electronic health records mostly from the US over a two-year period.

Of those with health records in the US-based TriNetX network, 1,284,437 people had a confirmed SARS-CoV-2 infection on or after January 20, 2020 and were included in the study: 185,748 children, 856,588 adults between 18 and 64 years old, and 242,101 adults over 65.

These individuals were matched to an equal number of patients with another respiratory infection to act as a control group.

Records from covid-19 patients infected during different pandemic waves were also compared to investigate differences in the impact of the Alpha, Delta, and Omicron variants on the risk of neurological and psychiatric diagnoses.

The study found that, in adults, the risk of having a depression or anxiety diagnosis initially increased post SARS-CoV-2 infection but returned to the same as with other respiratory infections after a relatively short time.

After the initial increase, the risks for a depression or anxiety diagnosis dropped to below that of the control group, meaning that after two years, there was no difference in the overall incidence of depression and anxiety between the covid-19 group and the other respiratory infections group.

However, the risk of diagnosis of some other neurological and mental health conditions was still higher after covid-19 than for other respiratory infections at the end of the two-year follow-up.

Adults aged 18-64 who had covid-19 up to two years previously had a higher risk of cognitive deficit, or 'brain fog', and muscle disease, compared to those who had other respiratory infections up to two years previously.

In adults aged 65 and over who had covid-19 up to two years previously, there was a higher occurrence of 'brain fog', dementia and psychotic disorder compared to those who previously had a different respiratory infection.

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