Health

I had a sydrome like this almost similar to yours, but fall- winter, Nov.- April, 2018-19 before Covid.

I never had anything like it in my life- thought it could be from an insect bite, Lyme Tick? although not as severe or destructive, maybe a light form of Mono, or from some pathogen in the air system.

I had no respiratory/gastro-int. issues or common flu symptoms, only fatigue, slight runny nose, brief migrane headache, some confusion.

Very weird, it drug on for months, really set me back but I'm grateful I finally came out of it by later spring 2019.

I'll probably never know what it was, but as a result and w/ Covid, I'm being good about shots/vaccines this year.

Trying to reduce risks, in the same age bracket as you.

-> 'Post Viral Fatigue Syndrome, The Condition Affecting Some Covid-19 Survivors,' The Conversation, Oct. 5, 2020,
https://theconversation.com/what-is-post-viral-fatigue-syndrome-the-condition-affecting-some-covid-19-survivors-146851