One of my autistic sons also has PANS - another layer of immune system dysfunction. There was a day where I was going to scream if someone just told me that going stricter on diet or finding the right supplement or vitamin was the right way to go. Or just exercise more. Or we’re imagining it. Or worse - he’s autistic and it’s “normal”. It’s not long covid, but it’s a post-illness inflammatory/immune system disregulation disorder…and I’d bet they’re all linked.