No fever, dry cough, no sputum, chest pain, pneumonia?

only cough, chest pain, but no fever, no expectoration, may also be pneumonia. Although the typical clinical manifestations of pneumonia are cough, expectoration, fever, but there are also some patients without typical clinical manifestations, only chest pain, chest pain to breathing or cough obvious, there are also some elderly patients without any respiratory symptoms, only performance for poor appetite, fatigue and other systemic symptoms. Therefore, the diagnosis of pneumonia cannot be judged solely by clinical manifestations, but needs to be comprehensively judged according to clinical manifestations, blood routine examination, chest imaging examination, etc.