The general symptoms of pneumonia are fever, cough, coughing, and chest tightness, but there are times when pneumonia can manifest itself without a cough. There are three aspects of this condition: 1. Patients of advanced age, because of their poor response to physical stimulation, can present with fever, chest tightness, or even poor nausea and weakness, but no cough. 2. Patients who are bedridden for a long time, where the infection is mainly in the lower lungs, at the base of the lungs, can also not present with a cough. 3. Some pathogens, such as viruses or chlamydia, mainly invade the interstitial space of the lungs and can present with chest tightness and fever but there is no cough.