Recently I had a patient experiencing oscillating fever, fatigue, weakness, extremities are generally cold which tells me she's anemic at that time. It eventually worsened to the point of near fainting. My suspect was dengue although I was not informed of any joint pains or rashes at the time. Of course it is also similar to west nile or yellow fever.
I DID NOT BOTHER TO HAVE A LABORATORY TEST because whatever it was, I can treat it the same way with different natural supplements. After several doses of Ferrosulfate, Euphorba Hirta (tawa tawa), Vitamin C with Zinc, Serpentina, the patient improved after a day with anemic symptoms vanishing almost entirely. Whatever the problem may have been, treatments, just like the disease, are grouped into a few. The best part of more natural holistic treatments is you can't go wrong. Even with the wrong prognosis, natural treatments will almost never be harmful.