Pneumonia can be caused by pathogenic microorganisms such as bacteria, viruses, fungi, and parasites, as well as physical and chemical factors such as radiation and inhaled foreign bodies. Bacterial pneumonia can be cured within seven to ten days after treatment with appropriate antibiotics. Viral pneumonia is slightly milder, and drug therapy is ineffective, but the disease rarely lasts more than seven days.
1. Anatomical and morphological classification
Anatomical parts of the lungs
Pneumonia is classified into lobar pneumonia, bronchopneumonia, interstitial pneumonia and capillary bronchitis.
2.Classification according to the pathogen
Including bacterial pneumonia, common bacteria such as Streptococcus pneumoniae, Staphylococcus, Haemophilus influenzae, etc.
Viral pneumonia, common viruses such as whistle syncytial virus, influenza virus, parainfluenza virus, adenovirus, etc.
Others such as fungal pneumonia, mycoplasma pneumonia, chlamydia pneumonia, etc.
3, according to the course of the disease classification
Acute pneumonia, prolonged pneumonia and chronic pneumonia, generally prolonged pneumonia course up to 1 to 3 months, more than 3 months is chronic pneumonia.
4, according to the classification of the route of infection
This includes community pneumonia and nosocomial pneumonia. Community-onset pneumonia is a serious disease. It is the fourth leading cause of death in the United Kingdom and the sixth leading cause of death in the United States.
Nosocomial pneumonia, also known as hospital pneumonia, is a lung infection acquired after hospitalization for another illness or treatment. It is recognized as a different disease from community-acquired pneumonia because the etiology, microbiology, treatment, and prognosis are different. Hospitalized patients have many risk factors for pneumonia, including whistler use, chronic malnutrition, underlying cardiopulmonary disease, gastric acid deficiency, and immune disorders.
5. Classification according to clinical presentation
This includes typical pneumonia and atypical pneumonia.
For pneumonia whose etiology cannot be clarified within a short period of time, it is classified according to its clinical manifestations. Pneumonia with a clear pathogen often has a certain pattern in clinical manifestations, and the clinical manifestations are relatively typical, such as pneumococcal pneumonia with fever, cough, small vesicular sounds on auscultation of the lungs, and chest films showing lamellar shadows, which can be called typical pneumonia.
Then there is mycoplasma pneumonia, before people recognize this disease, fever, cough, lung auscultation, chest x-ray and other clinical manifestations are atypical, so at first it was also called atypical pneumonia. Later, after serum immunology and other tests to find and isolate Mycoplasma pneumoniae, it was separated from atypical pneumonia and mycoplasma pneumonia was no longer referred to as atypical pneumonia. So atypical pneumonia is just a transitional name before people find a clear pathogen for the time being.
6. Other types of pneumonia
Severe acute whistle syndrome (SARS)
Pneumocystis carinii pneumonia
Occlusive fine bronchitis with mechanized pneumonia
Eosinophilic pneumonia