I would not be surprised if the "dormant until triggered" explanation is true for most conditions. This seems to be pretty compelling observations for various

I would not be surprised if the "dormant until triggered" explanation is true for most conditions. This seems to be pretty compelling observations for various disorders like Alzheimer's, various autoimmune conditions, etc. being caused or exacerbated by previous infections. It was the case for me. I apparently have the genes for a semi-rare autoimmune condition (Guttate Psoriasis) that was triggered after a bout of some kind of viral illness. Typically, step throat is the trigger for many with the disorder, but that was not the case for me.