Maybe it's just because everything today has been tied into my
mortality, this whatever it is invading my
blood stream,
lymph nodes,
muscles,
joints,
head,
body is simply serving to remind me I am
mortal. In fact, as this continues,
I am fully aware that I am dying second by precious second. I'm just glad I'm not dying any faster. That would hurt a lot.
So in various readings one idea of illness I've come across (very new age, to be sure) is that this life, this box, this room, is merely something we have inflicted upon ourselves to teach us. It has nothing to do with our souls except to gather information. I suppose that in this sense, sickness is a way of maintaining the illusion that the box is real, so we don't get distracted. To relieve illness, we simply need to recognize it as merely an illusion.
Another idea is that illness comes from imbalance - of the humours, of the hot and cold influences on life, what have you. Being sick is a way of signaling you need to rebalance your life. Once balance is restored - usually by dosing yourself with opposing influences - you will no longer be sick.
Then there is the whole invading virus/parasite/infection theory. White blood cells work to destroy the invading cause of your illness, and when enough has been destroyed, you feel better.
Of course, there is also the variety of invading evil spirits, malignant forces, that kind of thing.
Regardless, the best thing I can think of to do right now, wrapped in flannel and blankets, with my throat so sore I can barely swallow and every joint aching (I was never previously this aware of my pinky finger joints) is to have some hot tea with honey, and lie down and sleep until it all goes away. I don't really care what caused it, as long as I know that it will disappear eventually. Then I can forget that I'm mortal again.