Dengue is a viral infection transmitted mainly through the bite of infected Aedes mosquitoes. It is common in tropical and subtropical regions and can range from a mild fever to severe, potentially life-threatening dengue.
Common Symptoms of Dengue
Symptoms generally appear 4–10 days after infection and may include:
High fever
Severe headache
Pain behind the eyes
Muscle, bone and joint pain
Nausea or vomiting
Skin rash
Weakness and fatigue
Swollen glands in some cases
Warning Signs of Severe Dengue
Severe dengue can develop rapidly, particularly around the time the fever begins to subside. Seek immediate medical attention if there is:
Severe abdominal pain or tenderness
Persistent or repeated vomiting
Bleeding from the nose or gums
Blood in vomit or stool
Rapid breathing
Extreme tiredness, restlessness or irritability
Pale or cold skin
Severe weakness
How Is Dengue Diagnosed?
A healthcare professional evaluates symptoms and medical history and may recommend blood tests to confirm dengue or rule out other infections. Different tests may be useful at different stages of illness.
How to Prevent Dengue
The best prevention is to reduce mosquito bites and eliminate mosquito breeding sites:
Use mosquito repellents.
Wear clothing that covers the arms and legs.
Use window and door screens.
Use mosquito nets, particularly when sleeping during the day.
Remove stagnant water from containers, pots, coolers and other areas around the home.
Keep water-storage containers covered and clean them regularly.
If you develop a high fever with headache, body pain, rash, nausea or vomiting, consult a healthcare professional, especially if you live in or have recently visited an area where dengue is common. Warning signs such as abdominal pain, persistent vomiting or bleeding require urgent medical care.
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