Must pneumonia patients always have a fever?

Fever usually refers to an elevated body temperature. Generally speaking, patients with pneumonia do not always develop a fever, although most do experience one. The detailed explanation is as follows:

Pneumonia typically occurs when the body's immunity decreases and pathogenic microorganisms, such as bacteria or viruses, cause inflammation in the lung parenchyma or interstitium. In cases of pneumonia caused by mycoplasma, there are often no obvious symptoms in the early stage. Subsequently, patients may experience body aches, fatigue, headache, and dry cough, but usually do not have a fever. However, if pathogens invade the body and produce pyrogens that affect the body's temperature regulation center, some patients may develop fever and chills.

It is recommended that patients with pneumonia actively cooperate with doctors for treatment to prevent worsening of the condition and increased difficulty in treatment.