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Symptoms
By Mayo Clinic staffPneumonia often mimics the flu, beginning with a cough and a fever, so you may not realize you have a more serious condition. Symptoms can vary depending on your age and general health.
The signs and symptoms of pneumonia may include:
- Fever
- Lower-than-normal body temperature in older people
- Cough
- Shortness of breath
- Sweating
- Shaking chills
- Chest pain that fluctuates with breathing (pleurisy)
- Headache
- Muscle pain
- Fatigue
When to see a doctor
Because pneumonia can be serious, see your doctor as soon as possible if you have a persistent cough, shortness of breath, chest pain, and fever — especially a lasting fever of 102 F (39 C) or higher with chills and sweating. Also contact your doctor if you suddenly feel worse after a cold or the flu.
Be especially prompt about seeking medical care if you're an older adult or you smoke, drink excessively, have an injury, are undergoing chemotherapy or taking medication, such as prednisone, that suppresses your immune system. For some older adults and people with heart failure or lung ailments, pneumonia can quickly become a life-threatening condition.
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- Singh S, et al. Long-term use of inhaled corticosteroids and the risk of pneumonia in chronic obstructive pulmonary disease: A meta-analysis. Archives of Internal Medicine. 2009;169:219.
- Chong C, et al. Pneumonia in the elderly: A review of the epidemiology, pathogenesis, microbiology and clinical features. Southern Medical Journal. 2008;101:1141.
- Chong C, et al. Pneumonia in the elderly: A review of severity assessment, prognosis, mortality, prevention and treatment. Southern Medical Journal. 2008;101:1134.
- Pneumococcal disease in-short. Centers for Disease Control and Prevention. http://www.cdc.gov/vaccines/vpd-vac/pneumo/in-short-both.htm. Accessed March 23, 2011.
- File TM. Treatment of hospital-acquired, ventilator-associated, and healthcare-associated pneumonia in adults. http://www.uptodate.com/home/index.html. Accessed March 23, 2011.
- Mandell LA, et al. Pneumonia. In: Fauci AS, et al. Harrison's Online. 17th ed. New York, N.Y.: The McGraw-Hill Companies; 2008. http://www.accessmedicine.com/content.aspx?aid=2899132. Accessed April 5, 2011.
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