4. Lack of Appetite
While the kidney infection continues to develop and also becomes more inflamed over time, all of the associated symptoms will most likely get worse, which include not feeling as hungry as usual or a complete lack of appetite altogether. This increases the potential for harm from the kidney infection because you not only have that underlying issue to deal with, but you also tend to eat much less which can lead to more fatigue and nutritional problems.
These added health concerns on top of the initial infection can make it much more difficult for the body to fight back and maintain its regular functions, so it is very important not to fall into a vicious cycle such as this. If you experience a lack of appetite for more than just a day or two, and particularly if it is experienced alongside some of the other symptoms mentioned here, then you will need to see a doctor.