This is an interesting idea, that makes some kind of sense to me. Now, as far as I know MDMA is one of the most effective treatments for PTSD, perhaps the GPs should be widely prescribing that post recovery?
A new report suggests that lingering “brain fog” and other neurological symptoms after COVID -19 recovery may be due to post-traumatic stress disorder (PTSD), an effect observed in past human coronavirus outbreaks such as SARS and MERS.
People who have recovered from COVID-19 sometimes experience lingering difficulties in concentration, as well as headaches, anxiety, fatigue or sleep disruptions. Patients may fear that the infection has permanently damaged their brains, but researchers say that’s not necessarily the case
https://www.uclahealth.org/brain-fog-following-covid-19-recovery-may-indicate-ptsd