Patient's question:
Recently, I've been experiencing chest pain and tightness in my chest. The hospital examination indicated a respiratory disease, but the medication hasn't been very effective. Recently, my cough has worsened. What are the symptoms of a lung infection?Doctor's answer:
The symptoms of lung infection can include coughing and phlegm, and in severe cases, fever may occur. It can be caused by pathogenic microorganisms such as bacteria, viruses, fungi, and parasites, as well as physical and chemical factors like radiation and inhaled foreign bodies. The main manifestations of infection symptoms include a slow onset, fatigue, headache, and systemic symptoms like fever, though the fever is usually not high. The main types of lung infections are primarily caused by the invasion of external viruses and bacteria, as well as the spread of inflammation within the lungs.