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Dengue is a mosquito-borne viral infection that can cause high fever, headache, body pain, nausea, and skin rash. Recognising dengue symptoms early helps patients seek medical advice and receive appropriate monitoring. In Kollam and other parts of Kerala, people with fever should pay attention to their symptoms, particularly if their condition changes after the fever begins to settle.

Most people with dengue recover with appropriate care. However, some develop severe dengue, which can cause internal bleeding, fluid leakage, or shock. Knowing the warning signs and when to seek urgent medical attention can help prevent dangerous delays.

What are the common dengue symptoms?

Dengue commonly causes sudden high fever, severe headache, pain behind the eyes, muscle and joint pain, nausea, vomiting, and sometimes a skin rash. Symptoms usually begin 4 to 10 days after an infected mosquito bite and may last 2 to 7 days.

Not everyone experiences the same symptoms. Some people have mild illness, while others may develop complications that require hospital care.

Which early dengue symptoms should you watch for?

The first signs of dengue can resemble other common infections, including viral fever. A combination of symptoms, recent mosquito exposure, and local dengue activity can help a doctor decide whether testing is needed.

Common signs include:

1. High fever: Dengue often begins with a sudden fever, which may be accompanied by chills and discomfort.

2. Severe headache: A persistent headache can occur, sometimes with pain or pressure behind the eyes.

3. Muscle and joint pain: Body aches, joint pain, and muscle discomfort are common. Dengue is sometimes called break-bone fever because of the intensity of these aches.

4. Nausea and vomiting: Some patients experience nausea, reduced appetite, or vomiting.

5. Skin rash: A rash may appear during the illness. Its appearance and timing can vary between individuals.

These signs do not confirm dengue on their own. Other infections can cause similar symptoms, so medical assessment is important rather than relying on symptoms alone.

What are the warning signs of severe dengue?

Severe abdominal pain, repeated vomiting, bleeding, unusual drowsiness, and breathing difficulty are warning signs that require immediate medical assessment. These symptoms can appear as the fever settles, so a lower temperature should not automatically be taken as a sign of recovery.

Watch for the following changes:

1. Severe or persistent abdominal pain: Increasing stomach pain or tenderness needs urgent assessment.

2. Repeated vomiting: Ongoing vomiting can cause dehydration and may indicate a complication.

3. Bleeding: Look for bleeding from the nose or gums, unusually heavy menstrual bleeding, blood in vomit, or black or bloody stools.

4. Extreme tiredness or restlessness: Unusual weakness, irritability, confusion, or difficulty staying awake should not be ignored.

5. Breathing difficulty or cold, pale skin: Rapid breathing, cold or clammy hands and feet, or feeling faint can indicate serious illness.

Do not wait for every warning sign to appear. Seek emergency medical care if any of these dengue symptoms develop.

Can dengue become serious after the fever goes down?

Yes. The period when the fever starts to settle can be a critical phase of dengue. Some patients develop complications around this time, even if their temperature has returned to normal.

During this phase, fluid can leak from blood vessels into surrounding tissues. In severe cases, this may affect circulation and lead to shock or breathing problems. This is why doctors may recommend continued observation and follow-up after the fever decreases.

Caregivers should monitor the patient’s general condition, fluid intake, urine output, and any new warning signs. Follow the review schedule provided by the treating doctor.

How is dengue diagnosed and treated?

A doctor assesses dengue symptoms, medical history, physical findings, and the stage of illness before deciding which investigations are appropriate. Blood tests may be used to detect dengue infection and monitor changes in blood counts and other clinical indicators. The type and timing of testing depend on how many days the patient has been unwell.

There is no specific antiviral medicine that cures dengue. Treatment focuses on supportive care, including adequate fluids, rest, fever management, and monitoring for complications. Patients with warning signs or severe illness may need hospital admission and carefully supervised treatment.

Avoid self-medicating with aspirin or ibuprofen because these medicines can increase bleeding risk in dengue. Ask a doctor about appropriate fever relief and the correct dose for the patient.

When should you consult a doctor in Kollam?

Seek medical advice if you develop a sudden fever with headache, body pain, nausea, rash, or other symptoms that could indicate dengue. Early assessment helps the doctor decide whether testing, monitoring, or treatment is needed.

Children, older adults, pregnant women, and people with conditions such as diabetes or kidney disease may need closer medical assessment. Do not wait for symptoms to become severe before seeking advice.

The General Medicine Department at Matha Medical Centre provides diagnosis and care for fever, infections, and other medical conditions. Children who need age-specific assessment can also be directed to the Paediatrics Department. For severe symptoms, seek immediate care through an appropriate emergency service rather than waiting for a routine appointment.

How can you reduce the risk of dengue?

Dengue prevention starts with reducing contact with Aedes mosquitoes and removing places where they breed. These mosquitoes can bite during the daytime, so protection should not be limited to nighttime.

Keep water storage containers covered. Empty and clean containers, plant trays, buckets, and other places where water collects at least once a week. Dispose of items that hold stagnant water, use suitable mosquito repellent, and wear clothing that covers exposed skin when possible.

If someone in your household has dengue, continue mosquito-bite prevention during the illness to reduce the chance of mosquitoes picking up and spreading the virus.

Conclusion

Recognising dengue symptoms is important, but knowing the warning signs is even more important. Severe abdominal pain, repeated vomiting, bleeding, unusual drowsiness, or breathing difficulty needs urgent medical attention, even when the fever has started to decrease. If you or a family member develops symptoms, seek medical advice and follow the recommended monitoring plan. For information about the hospital and its services, visit Matha Medical Centre. Dengue requires timely assessment, careful monitoring, and appropriate medical care.

Frequently Asked Questions

1. How many days after a mosquito bite do dengue symptoms appear?

Dengue symptoms usually begin 4 to 10 days after a person is bitten by an infected mosquito. The illness commonly lasts 2 to 7 days, although recovery can take longer. The timing varies between individuals, and not everyone infected with dengue develops noticeable symptoms.

2. Can dengue occur without a skin rash?

Yes. A skin rash is one possible symptom, but not everyone with dengue develops one. Fever, headache, pain behind the eyes, muscle aches, nausea, and vomiting may occur without a rash. The absence of a rash does not rule out dengue, so medical assessment may still be necessary.

3. Is a falling fever a sign that dengue is getting better?

Not always. The period when the fever decreases can coincide with the critical phase of dengue, when some patients develop complications. Watch for abdominal pain, persistent vomiting, bleeding, unusual tiredness, or breathing difficulty. Seek urgent medical assessment if any warning signs appear, even after the fever settles.

4. Which blood tests are used to diagnose dengue?

Doctors may recommend tests that detect dengue virus components or antibodies, depending on the stage of illness. A complete blood count may also help monitor platelet levels, white blood cells, and haematocrit. The appropriate tests and timing should be decided by a healthcare professional based on the patient’s condition.

5. When should I visit a hospital for dengue symptoms?

Seek medical assessment if you develop fever with symptoms such as severe headache, body pain, nausea, or rash. Go for emergency care if you experience severe abdominal pain, repeated vomiting, bleeding, breathing difficulty, faintness, or unusual drowsiness. Do not wait for the fever to return or worsen.