Pneumonia can also present without fever or cough, and these pneumonia symptoms are atypical and need to be detected by imaging. Pneumonia is an inflammation of the terminal airways, alveoli, and interstitium of the lungs, usually characterized by fever, chills, cough, sputum, with or without chest pain, and dyspnea in patients with extensive lesions. In mild cases, the extent of pneumonia is small, and there may be no fever or cough. Some pneumonia symptoms are atypical, with no symptoms of fever or cough, and only poor spirits, such as in newborns. Or they may only present with symptoms such as chest pain and chest tightness. These need to rely on imaging tests to diagnose pneumonia. If pneumonia does not have a cough or fever, it does not necessarily mean that the condition is not serious enough. If pneumonia is found on examination, even if the symptoms are atypical, it is important to follow the doctor’s instructions and standardize the treatment so that the condition is not missed.