In my own opinion, it is possible that cold pathogen enters the body, mainly because cold pathogen stays in qi, which leads to the suppression of yang in the body. You use Sini decoction to tonify kidney yang, which frequently leads to qi rising. This also happens in the sun. Therefore, I personally think that the principle of treatment is to warm and dispel cold and regulate qi. In this process, we should consider the situation that "Yin wins Yang", so we should add less inducing drugs such as Rhizoma Coptidis in the prescription to prevent rejection.
It is feasible to smoke and roast Yongquan, which is the focus of health care. In addition, your illness can be cured, but it will take some time to see a better Chinese medicine doctor. You can ask, Chinese medicine practitioners who are good at treatise on febrile diseases, look for him. It's right not to talk about long-term sick kidneys, but don't worry.
You can try it first. Guizhi decoction is made by mixing Herba Ephedrae, Sinisan and Rhizoma Coptidis. You can add some drugs to strengthen the spleen. If you feel cold in your limbs, you can add cinnamon. Note that it is Sinisan, not Sinitang. If not, find a Chinese doctor who studies febrile diseases. get well soon ...