Digestive problems. Many specific digestive issues are related to pneumonia, and those symptoms can also consist of diarrhea, disillusioned belly, dehydration or liquid stools. Indigestion and decreased appetite as an instance are very common symptoms of pneumonia. The body is just undeniable exhausted and attempting to balance out all the signs and symptoms you are going through at one time, and with that, regularly the belly takes the brunt of the demanding situations. These troubles are connected typically to excessive circumstance.