Mycoplasma pneumoniae infection symptoms usually refer to some disease symptoms that may occur after human infection with Mycoplasma pneumoniae, mainly cough, fever and runny nose. Many infected people have mild discomfort or even no abnormal clinical manifestations at all, but some infected people have more serious symptoms of pneumonia and respiratory disease, such as irritating and severe cough and sputum, chest pain, etc. At the beginning of the infection, patients may experience sore throat, muscle aches, weakness, loss of appetite, nausea and vomiting, etc. As the disease progresses, more obvious respiratory symptoms begin to appear, such as severe cough and sputum, severe nocturnal cough, chest pain or difficulty in breathing. Some patients may also develop nasal congestion and runny nose, swollen lymph nodes in the neck, and may also have a rash, such as maculopapular rash and blistering rash, etc. Some patients may also develop digestive disorders, diarrhea and vomiting. The symptoms of mycoplasma infection in the lungs are diverse, ranging from initial malaise and sore throat to cough and sputum, and other parts of the body may also have abnormal symptoms. If similar symptoms appear, it is recommended to go to a regular hospital for early treatment.