Dengue fever

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Definition

Dengue fever is a disease — ranging from a mild to severe — caused by four related viruses spread by a particular species of mosquito. Mild dengue fever causes high fever, rash, and muscle and joint pain. More severe forms of the disease — dengue hemorrhagic fever and dengue shock syndrome — can additionally cause severe bleeding, a sudden drop in blood pressure (shock) and death.

No specific treatment for dengue fever exists, and most people recover. But if you have a severe form of the disease, you need hospital care.

Fifty million to 100 million cases of dengue infection occur worldwide each year. Most cases of dengue fever occur in urban areas of tropical and subtropical regions. A few cases have been reported in the United States — particularly in Texas, along the border with Mexico, and in Hawaii.

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Symptoms