Dengue Fever

Dengue fever is a viral infection caused by the dengue virus, which is transmitted to humans mostly by the bite of infected Aedes mosquitoes, particularly Aedes aegypti. It is a mosquito-borne illness that is widespread in tropical and subtropical areas. Here’s a quick rundown of dengue and its early warning signs:


Dengue fever is caused by one of four viruses that are closely related: DENV-1, DENV-2, DENV-3, and DENV-4. The bites of infected female mosquitoes, especially the Aedes aegypti mosquito, transmit these viruses to humans. Mosquitoes can spread the virus to people through their bites if infected.


Dengue fever symptoms range from mild to severe and are normally present 4 to 10 days after being bitten by an infected mosquito. The following are the early signs and symptoms of dengue fever:

High fever:

A sudden development of a high temperature that can exceed 104°F (40°C).

Severe Headache:

A severe headache that is intense and throbbing, commonly in the region of the forehead.

Pain Behind the Eyes:

Pain behind the eyes, especially while moving the eyes.

Joint and Muscle Pain:

Severe joint and muscle pain, dubbed “breakbone fever” due to its intensity.


Extensive weariness and weakness that can continue for weeks.

Vomiting and Nausea:

Nausea, vomiting, and occasionally stomach discomfort.


A rash may occur a few days after the fever has started. It often begins in the arms and legs and spreads to other regions of the body.

These symptoms might resemble a severe flu-like illness in many circumstances. It is crucial to highlight that some people infected with the dengue virus may have moderate or even asymptomatic symptoms, while others may have severe dengue.

Warning Signs of Severe Dengue:

Dengue fever can escalate to severe dengue, also known as dengue hemorrhagic fever or dengue shock syndrome, in some situations. The following are symptoms of severe dengue:

1 Abdominal ache that is unbearable.
2 Vomiting that does not stop.
3 The nose or gums are bleeding.
4 Vomiting with blood on a regular basis.
5 Breathing quickly.
6 Tiredness or agitation.
7 Skin that is cold or clammy.
8 The pulse is weak and fast.

Types of Dengue:

Dengue infection may be classified into three types:

Dengue Fever:

The most prevalent kind of dengue infection is dengue fever. High temperature, severe headache, joint and muscular discomfort, and rash are all symptoms. The majority of dengue fever cases are mild and may be treated with supportive treatment.

Dengue Hemorrhagic Fever (DHF):

Dengue Hemorrhagic Fever (DHF) is a more severe type of dengue illness. Patients with DHF may have bleeding from the nose, gums, or beneath the skin, in addition to the symptoms of dengue fever. If not treated immediately, this kind of dengue can cause shock, organ failure, and even death.

Dengue Shock Syndrome (DSS):

Dengue Shock Syndrome (DSS) is the most severe type of dengue illness. It is characterized by a fast decrease in blood pressure, shock, and, in some cases, multiple organ failure. It is a medical emergency that need rapid medical intervention.


Dengue fever is primarily spread by the bite of an infected Aedes mosquito, namely Aedes aegypti. These mosquitos are most active early in the morning and late in the afternoon. When a mosquito becomes infected, it is contaminated for life and may transfer the virus to people with each bite.

Geographical Distribution:

Dengue fever is found in many parts of the world, particularly in tropical and subtropical areas. It is widespread in Asia, the Pacific Islands, the Caribbean, Central and South America, and Africa. The danger of dengue transmission rises during the rainy season as mosquito breeding grounds proliferate.


Dengue fever is normally diagnosed using a combination of clinical symptoms, travel history, and laboratory investigations. The presence of the dengue virus can be confirmed by blood tests such as PCR (polymerase chain reaction) or serological assays.


Dengue has no particular antiviral therapy. The primary treatment is supportive care, which includes rest, hydration, and management of symptoms like as fever and discomfort. Hospitalization may be necessary in extreme situations for strict monitoring and suitable medical treatment.


The key to preventing dengue infection is to reduce mosquito exposure and breeding sites:

1 Apply insect repellant to exposed skin and clothes.
2 Wear long-sleeved shirts and trousers, especially during peak mosquito season.
3 To avoid mosquito breeding, remove or adequately cover containers that gather and keep water.
4 To avoid mosquito bites while sleeping, use insecticide-treated bed nets.
5 Implement mosquito control activities at the community level.


Dengvaxia, a dengue vaccine, has been developed and authorized for use in various countries. It is critical to speak with healthcare experts and health authorities in your area about the availability and recommendations for dengue immunization.

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