One in five COVID-19 patients develop mental illness within 90 days - study

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Many COVID-19 survivors are likely to be at greater risk of developing mental illness, psychiatrists said on Monday, after a large study found 20% of those infected with the coronavirus are diagnosed with a psychiatric disorder within 90 days.

Anxiety, depression and insomnia were most common among recovered COVID-19 patients in the study who developed mental health problems. The researchers from Britain's Oxford University also found significantly higher risks of dementia, a brain impairment condition.

"People have been worried that COVID-19 survivors will be at greater risk of mental health problems, and our findings ... show this to be likely," said Paul Harrison, a professor of psychiatry at Oxford.

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The study, published in The Lancet Psychiatry journal, analysed electronic health records of 69 million people in the United States, including more than 62,000 cases of COVID-19. The findings are likely to be the same for those afflicted by COVID-19 worldwide, the researchers said

In the three months following testing positive for COVID-19, 1 in 5 survivors were recorded as having a first time diagnosis of anxiety, depression or insomnia. This was about twice as likely as for other groups of patients in the same period, the researchers said.

The study also found that people with a pre-existing mental illness were 65% more likely to be diagnosed with COVID-19 than those without.

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