Understanding Dengue Fever: Prevention and Early Symptoms

Dengue fever is a mosquito-borne viral infection that becomes especially common in Bangladesh during and after the monsoon season, when stagnant water creates breeding grounds for the Aedes mosquito. Recognizing the early signs and taking preventive steps can make a significant difference in outcomes.

Early Warning Signs

Dengue typically begins with a sudden high fever, often 103–105°F, accompanied by:

  • Severe headache and pain behind the eyes
  • Muscle, joint, and bone pain
  • Nausea, vomiting, or loss of appetite
  • Skin rash appearing two to five days after the fever starts
  • Mild bleeding, such as nosebleeds or bruising easily

If fever persists beyond two days, or if you notice severe abdominal pain, persistent vomiting, or bleeding gums, seek medical attention immediately — these can be signs of a more severe form of the disease.

Prevention at Home

Since there is no specific cure for dengue, prevention is the most effective protection:

  • Empty and clean water-holding containers (flower pots, buckets, tires) at least once a week
  • Keep water tanks and containers tightly covered
  • Use mosquito nets, repellents, and window screens, especially during dawn and dusk
  • Wear long-sleeved clothing when spending time outdoors in high-risk areas

When to See a Doctor

If you or a family member develops a sudden high fever during dengue season, it’s best to consult a doctor early rather than waiting for symptoms to worsen. Early diagnosis through a blood test (NS1 antigen or platelet count) allows for proper monitoring, especially for children and the elderly, who are more vulnerable to complications.