Symptoms of Legionnaires' disease


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General information about symptoms of Legionnaires' disease: The symptom information on this page attempts to provide a list of some possible symptoms of Legionnaires' disease. This symptom information has been gathered from various sources, may not be fully accurate, and may not be the full list of symptoms of Legionnaires' disease. Furthermore, symptoms of Legionnaires' disease may vary on an individual basis for each patient. Only your doctor can provide adequate diagnosis of symptoms and whether they are indeed symptoms of Legionnaires' disease.

List of symptoms of Legionnaires' disease: The list of symptoms mentioned in various sources for Legionnaires' disease includes:

Symptoms of Legionnaires' disease: Symptoms of Legionnaires' disease include fever, chills, and a cough that may or may not produce sputum. Other symptoms include abdominal pain, diarrhea, and confusion. This list of symptoms, however, does not readily distinguish Legionnaires' disease from other types of pneumonia.1

Although Legionnaires' disease has a mortality rate of 5 to 15 percent, many people may be infected with the bacterium that causes the disease, yet not develop any symptoms. It is likely that many cases of Legionnaires' disease go undiagnosed.1

Outbreaks of Legionnaires' disease receive significant media attention. However, this disease usually occurs as a single, isolated case not associated with any recognized outbreak. When outbreaks do occur, they are are usually recognized in the summer and early fall, but cases may occur year-round. About 5% to 30% of people who have Legionnaires' disease die.2

Patients with Legionnaires' disease usually have fever, chills, and a cough, which may be dry or may produce sputum. Some patients also have muscle aches, headache, tiredness, loss of appetite, and, occasionally, diarrhea. Laboratory tests may show that these patients' kidneys are not functioning properly. Chest X-rays often show pneumonia. It is difficult to distinguish Legionnaires' disease from other types of pneumonia by symptoms alone; other tests are required for diagnosis. 2

More symptoms of Legionnaires' disease: In addition to the above information, to get a full picture of the possible symptoms of this condition and its related conditions, it may be necessary to examine symptoms that may be caused by complications of Legionnaires' disease, underlying causes of Legionnaires' disease, associated conditions for Legionnaires' disease, risk factors for Legionnaires' disease, or other related conditions.

Medical articles on symptoms: These general reference articles may be of interest:



Footnotes:
1. excerpt from Legionnaires' Disease: NIEHS_1
2. excerpt from Legionellosis (General): DBMD

Last revision: May 30, 2003

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