Dengue control

Dengue/Severe dengue frequently asked questions


What are the symptoms of dengue fever and severe dengue?

Dengue fever

Dengue causes flu-like symptoms and lasts for 2-7 days. Dengue fever usually occurs after an incubation period of 4-10 days after the bite of the infected mosquito.

High Fever (40°C/ 104°F) is usually accompanied by at least two of the following symptoms:

  • Headaches
  • Pain behind eyes
  • Nausea, vomiting
  • Swollen glands
  • Joint, bone or muscle pains
  • Rash
Severe dengue

When developing into severe dengue, the critical phase takes place around 3-7 days after the first sign of illness. Temperature will decrease; this does NOT mean the person is necessarily recovering. On the other hand, special attention needs to be given to these warning signs as it could lead to severe dengue:

  • Severe abdominal pain
  • Persistent vomiting
  • Bleeding gums
  • Vomiting blood
  • Rapid breathing
  • Fatigue/ restlessness

When severe dengue is suspected, the person should be rushed to the emergency room or to the closest health care provider as it causes:

  • Plasma leaking that may lead to shock and/or fluid accumulation with/without respiratory distress;
  • Severe bleeding;
  • Severe organ impairment.
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Last update:

22 August 2011 17:56 CEST