A complete excuse for laziness.
My mother has it in spades. It is likely to be a mixed herpes/CMV/Epstein-Barr viral infection that is intra-neuronal and exceedingly difficult to diagnose.
I have spent hundreds of hours trying to get tone-deaf doctors to make the smallest effort to consider anti-viral treatment.
100 Years ago some might have claimed that diabetics were making it up.
You do not have a clue.
So laziness causes a person to have a fever?