- Clinical manifestations may include upper respiratory symptoms, conjunctivitis, and rhinitis in association with fever, nonproductive cough, and malaise.
- Physical examination findings often reveal tachypnea, diffuse rales, and wheezes and may reveal cyanosis and hypoxemia.
Complications include development of acute respiratory distress syndrome or secondary bacterial pneumonia, which usually occurs 2-14 days after an improving clinical course with recurrence of fever, cough, and dyspnea.
Related topics: community-acquired pneumonia, COVID-19, herpes simplex virus pneumonia, varicella pneumonia
J12.9 – Viral pneumonia, unspecified
75570004 – Viral pneumonia
- Bacterial pneumonia (eg, Streptococcus pneumoniae pneumonia)
- Asthma exacerbation
- Chronic obstructive pulmonary disease exacerbation
- Congestive heart failure exacerbation (hydrostatic pulmonary edema)
- Acute respiratory distress syndrome
- Cryptogenic organizing pneumonia
- Acute interstitial pneumonia
- Pneumonitis secondary to aspiration (see aspiration pneumonia), inhalation of heat / smoke / chemicals, or medications / drugs
- Vasculitides affecting the lungs (granulomatosis with polyangiitis)
- Alveolar hemorrhage
- Eosinophilic pneumonia (acute, chronic)
- Fungal pneumonia, especially Pneumocystis jirovecii pneumonia but also pneumonia due to the endemic fungi (eg, histoplasmosis, coccidioidomycosis, blastomycosis, paracoccidioidomycosis, cryptococcosis)
- Neoplastic processes like pulmonary lymphoma or bronchioloalveolar cell carcinoma