Survey supports findings
The detrimental effects of mental health symptoms in long COVID were further supported in another study at the APA meeting, an online survey of 787 survivors of acute COVID-19.
In the community survey, presented by Michael Van Ameringen, MD, a professor in the department of psychiatry and behavioral neurosciences at McMaster University, in Hamilton, Ont., all respondents (100%) reported having persistent symptoms of the virus, and as many as 68% indicated that they had not returned to normal functioning, despite only 15% of the respondents having been hospitalized with COVID-19.
A large proportion showed significant depression, anxiety, and posttraumatic stress disorder (PTSD), and the most commonly reported persistent symptoms were fatigue in 75.9% of respondents, brain fog in 67.9%, concentration difficulties in 61.1%, and weakness in 51.2%.
As many as 88.2% of patients said they experienced persistent neurocognitive symptoms, with poor memory and concentration; 56% reported problems with word finding; and 54.1% had slowed thinking.
The respondents showed high rates of anxiety (41.7%) as well as depression (61.4%) as determined by scores above 9 on the Generalized Anxiety Disorder–7 (GAD-7) and Patient Health Questionnaires (PHQ-9).
As many as 40.5% of respondents showed probable PTSD, with scores above 30 on the PTSD checklist (PCL-5). Their mean resilience score on the Brief Resilient Coping Scale was 13.5, suggesting low resilience.
Among the respondents, 43.3% said they had received past treatment for mental health, while 33.5% were currently receiving mental health treatment.
Dr. Van Ameringen noted the important limitation of the study being an online survey with no control group, but said the responses nevertheless raise the question of the role of prior psychiatric disorders in long COVID.
“In our sample, 40% of respondents had a past psychiatric history, so you wonder if that also makes you vulnerable to long COVID,” he said in an interview.
“About a third were getting psychiatric help, but I think the more impaired you are, the more likely you are to seek help.”
Those who were hospitalized with COVID-19 were at a higher risk of PTSD compared with those not hospitalized (P < .001), as were those under the age of 30 (P < .05) or between 31 and 50 vs. over 50 (P < .01).
Dr. Van Ameringen noted that the survey’s high rate of subjects who had not returned to normal functioning was especially striking.
“This is not a minor issue – these are people who are no longer functioning in society,” he said.
In pandemics, the brain tends to be ‘overlooked’
Further addressing the neurological effects of COVID-19 at the APA meeting, Avindra Nath, MD, clinical director of the National Institutes of Neurologic Disorders and Stroke in Bethesda, Md., noted that the persisting cognitive and psychiatric symptoms after illness, such as brain fog and depression and anxiety, are not necessarily unique to COVID-19.
Dr. Avindra Nath
“We have seen this before,” he said. “There have been at least seven or eight human coronaviruses, and the interesting thing is each one affects the brain and causes neurological complications.”
The effects are classified differently and have slightly different receptors, “but the consequences are the same.”
Of note, however, research published in The Lancet Psychiatry (2021 May. doi: 10.1016/S2215-0366[21]00084-5) revealed that symptoms such as dementia, mood, and anxiety are significantly higher after COVID-19 compared with other respiratory infections, with the differences increasing at 180 days since the index event.
Dr. Nath noted that, over the decades, he has observed that in pandemics “the brain tends to get overlooked.” He explained that “what can be most important in the end is what happened in the brain, because those are the things that really cause the long-term consequences.”
“These patients are depressed; they have dementia, they have brain fog, and even now that we recognize these issues, we haven’t done a very good job of studying them,” he said. “There’s so much we still don’t know, and a lot of patients are left with these symptoms and nowhere to go.”
Dr. Lynch, Dr. Van Ameringen, and Dr. Nath had no disclosures to report.