Mycoplasma pneumoniae is most commonly responsible for lung infections, which we also refer to as mycoplasma pneumonia. The incubation period for mycoplasma pneumonia generally ranges from one to three weeks. The onset of the disease is quite varied, typically beginning gradually. Most patients primarily exhibit symptoms of low fever and fatigue, but a small proportion may experience a sudden onset of high fever, which can persist for an extended period. Additionally, the most pronounced symptom is a dry cough, characterized by intense coughing with little to no phlegm and long duration, sometimes lasting over a month. Moreover, some patients may also experience a sore throat and blood-streaked sputum. A very few patients, in addition to respiratory symptoms, may exhibit extrapulmonary symptoms primarily presenting as measles-like rashes. Very rarely, complications such as pericarditis, myocarditis, and meningitis may occur, manifesting corresponding symptoms, although these cases are generally very rare.