A symptom is something the patient feels or reports, while a sign is something that other people, including the doctor detects. A headache may be an example of a symptom, while a rash may be an example of a sign.
The symptoms of dengue fever. Image created by Mikael Häggström.
As there are different severities of dengue fever, the symptoms can vary.
Mild dengue fever
Symptoms can appear up to seven days after the mosquito carrying the virus bites, and usually disappear after a week. This form of the disease hardly ever results in serious or fatal complications.
The symptoms of mild dengue fever are:
- Aching muscles and joints
- Body rash that can disappear and then reappear
- High fever
- Intense headache
- Pain behind the eyes
- Vomiting and feeling nauseous.
Dengue hemorrhagic fever (DHF)
Symptoms during onset may be mild, but gradually worsen after a number of days. DHF can result in death if not treated in time. Mild dengue fever symptoms may occur in DHF, as well as the ones listed below:
- Bleeding from your mouth/gums
- Nosebleeds
- Clammy skin
- Considerably damaged lymph and blood vessels
- Internal bleeding, which can result in black vomit and feces (stools)
- Lower number of platelets in blood - these are the cells that help clot your blood
- Sensitive stomach
- Small blood spots under your skin
- Weak pulse.
Dengue shock syndrome
This is the worst form of dengue which can also result in death, again mild dengue fever symptoms may appear, but others likely to appear are:
- Intense stomach pain
- Disorientation
- Sudden hypotension (fast drop in blood pressure)
- Heavy bleeding
- Regular vomiting
- Blood vessels leaking fluid
- Death.
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