Quick Answer
Dengue fever is a mosquito-borne viral infection that commonly causes sudden fever, severe headache, muscle and joint pain, nausea, vomiting and skin rash. Recognising the dengue fever symptoms early can help people seek appropriate medical evaluation and care.
Dengue is common in tropical and subtropical regions where Aedes mosquitoes can breed. While many people recover with supportive care, some infections can become severe. Seek medical evaluation for persistent fever, worsening symptoms, or warning signs.
What Is Dengue Fever?
Dengue fever is an infection caused by the dengue virus and transmitted mainly through the bite of an infected Aedes mosquito.
The illness can affect children and adults and may range from a mild infection to severe dengue. Since early symptoms can resemble other viral illnesses, symptoms alone cannot confirm dengue.
What Causes Dengue Fever?
Dengue fever is caused by infection with the dengue virus and is transmitted through an infected mosquito.
A mosquito can acquire the virus after biting a person who has dengue. The infected mosquito can then transmit the virus to another person through a subsequent bite.
Does Dengue Spread From Person to Person?
Dengue is mainly transmitted through bites from infected mosquitoes and does not normally spread through everyday contact. Touching, sitting near or sharing food with a person who has dengue does not usually transmit the infection.
However, preventing mosquito bites around an infected person matters because mosquitoes can pick up the virus from an infected person and potentially transmit it to another person.
For a detailed explanation of how dengue spreads, including mosquito transmission and prevention, read our Dengue Transmission and Mosquito Prevention Guide.
Which Mosquito Causes Dengue?
Dengue is mainly transmitted by Aedes mosquitoes, particularly Aedes aegypti.
The dengue-causing mosquito commonly associated with transmission is Aedes aegypti. These mosquitoes can breed in water collected in containers around homes and buildings.
Removing standing water from buckets, plant pots, tyres and other containers can help reduce mosquito breeding.
What Are the Symptoms of Dengue Fever?
The most common dengue fever symptoms include:
- Sudden high fever
- Severe headache
- Pain behind the eyes
- Muscle and joint pain
- Nausea
- Vomiting
- Skin rash
- Tiredness and weakness
The severity of symptoms can vary. Some people may experience a mild illness, while others may require closer medical monitoring.
What Are the Early Signs of Dengue?
Early signs of dengue fever may include sudden fever, headache, body pain, weakness, nausea, and a skin rash.
Because these symptoms can also occur with other infections, medical evaluation may be appropriate when dengue is suspected.
How Long Do Dengue Symptoms Last?
Dengue symptoms usually appear several days after infection and may continue for several days. Duration and severity can vary by person.
A reduction in fever does not always mean that medical monitoring is no longer necessary. Discuss new or worsening symptoms with a healthcare professional.
What Are the Warning Signs of Severe Dengue?
Most dengue infections do not progress to severe disease, but certain warning signs require prompt medical attention.
Seek urgent medical care if a person develops:
- Severe abdominal pain
- Persistent vomiting
- Bleeding from the nose or gums
- Vomiting blood or blood in the stool
- Rapid or difficult breathing
- Extreme weakness or unusual restlessness
- Changes in alertness or consciousness
Severe symptoms should not be managed through self-medication.
How Is Dengue Diagnosed?
Symptoms alone cannot always confirm dengue. Fever, headache and body pain can occur with several other infections.
A doctor may consider:
- Symptoms and duration of illness
- Physical examination findings
- Relevant mosquito exposure or travel history
- Blood tests when clinically appropriate
The type and timing of testing can depend on the stage of illness and the patient’s condition.
How Is Dengue Treated?
There is no specific antiviral medicine that immediately eliminates dengue. Treatment generally focuses on supportive care, hydration, symptom management and monitoring for warning signs.
Patients should follow their doctor’s advice regarding medicines and fluid intake. People with suspected or confirmed dengue should avoid self-medication and discuss appropriate medicines with a healthcare professional.
Patients with severe dengue may require hospital-based monitoring and treatment.
How Can Dengue Be Prevented?
The main approach to prevention is to reduce mosquito exposure and eliminate mosquito breeding sites.
Simple Dengue Prevention Measures
- Remove stagnant water around the home.
- Keep water storage containers properly covered.
- Empty and clean containers that collect rainwater.
- Use suitable mosquito repellents as directed.
- Wear clothing that covers exposed skin.
- Use window screens or mosquito nets where appropriate.
- Keep indoor and outdoor surroundings clean.
Reducing mosquito breeding sites can help lower the risk of dengue fever transmission.
Frequently Asked Questions About Dengue
What is dengue fever?
Dengue disease is a viral infection transmitted mainly through bites from infected Aedes mosquitoes.
What are the main dengue fever symptoms?
Common symptoms include sudden fever, severe headache, pain behind the eyes, muscle and joint pain, nausea, vomiting, skin rash and weakness.
Which mosquito causes dengue?
Aedes mosquitoes, particularly Aedes aegypti, are important vectors for dengue transmission.
Is dengue contagious?
Dengue is primarily transmitted through infected mosquito bites and is not normally spread through everyday person-to-person contact.
What are the causes of dengue disease?
Dengue disease is caused by infection with the dengue virus, which is mainly transmitted through bites from infected Aedes mosquitoes.
When should I see a doctor for dengue symptoms?
Consult a healthcare professional if fever persists or is accompanied by concerning symptoms such as repeated vomiting, severe abdominal pain, bleeding, breathing difficulty, or significant weakness.
Get Medical Care for Dengue at Ponjesly Hospital
Recognising the dengue fever symptoms and seeking timely medical evaluation can help patients receive appropriate care. Persistent fever, severe headache, repeated vomiting, rash or other concerning symptoms should not be ignored.
Ponjesly Hospital provides medical evaluation for patients experiencing fever and suspected infections. A qualified healthcare professional can assess symptoms, recommend appropriate diagnostic evaluation when necessary and guide patients on further care.
If you or a family member has symptoms that may indicate dengue, contact Ponjesly Hospital to book a consultation and receive appropriate medical guidance. Seek immediate medical attention if severe or warning symptoms develop.