I took a placebo and feel great!
Which is of course possible, but it also raises the specter that "long-haul COVID" is really a mask for (understandable) psychological stress and depression which not-coincidentally coincided with pandemic and lockdowns.
https://jamanetwork.com/journals/jamanetworkopen/fullarticle...
What evidence do you have these are caused by vitamin-D deficiency? What are the incidence rates and how is it the cause?
Chronic fatigue syndrome is treated primarily with Cognitive Behavioural Therapy.
It's absolutely compatible with mental illness, especially considering that our governments just locked up everyone for more than a year.