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Dengue fever causes a high fever — 104 F (40 C) — and any of the following signs and symptoms: Most people recover within a week or so. In some cases, symptoms worsen and can become life-threatening. This is called severe dengue, dengue hemorrhagic fever or dengue shock syndrome.
Dengue fever is an illness spread by the bite of mosquitos infected with a dengue virus. Mild symptoms can worsen to severe dengue (dengue hemorrhagic fever).
Dengue fever symptoms. If you develop dengue fever, symptoms usually begin about 4 to 10 days after the initial infection. In many cases, symptoms will be mild. They may be mistaken for...
Symptoms. The most common symptom of dengue is fever with any of the following: Aches and pains (eye pain, typically behind the eyes, muscle, joint, or bone pain) Nausea, vomiting. Rash. Any warning sign. Common symptoms of dengue.
Learn how to identify the symptoms of this serious, mosquito-borne infection and how to protect yourself from infection.
Most people who get dengue will not have symptoms. But for those who do, the most common symptoms are high fever, headache, body aches, nausea, and rash. Most will get better in 1–2 weeks. Some people develop severe dengue and need care in a hospital. In severe cases, dengue can be fatal.
The most common dengue symptom is fever with: Keep Reading: Symptoms of Dengue and Testing. Symptoms of dengue usually begin within 2 weeks after being bitten by an infected mosquito. Symptoms typically last 2–7 days. Most people will recover after about a week. Dengue transmission is common in tropical and subtropical areas of the world.
Dengue warning signs include abdominal pain or tenderness, persistent vomiting, clinical fluid accumulation, mucosal bleeding, lethargy, restlessness, and liver enlargement. Patients with warning signs should be monitored closely as they can be more likely to progress to severe disease.
DATE: 07/31/2025. Dengue fever is a priority for NIAID. About 50 million cases occur each year worldwide, with 22,000 deaths, mostly in children.
Overview. Dengue fever, also known as dengue, is an illness caused by infection with any of four closely related dengue viruses. It is transmitted to humans via the bites of infected mosquitoes.