Dengue Fever Types, Symptoms, and Causes

Published on
October 17, 2024
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Introduction

Dengue fever can be described as a virus transmitted by mosquitoes that affects millions all over the world, especially in subtropical and tropical areas. It is caused by the dengue virus (DENV) that can be transmitted via bites of females infected by Aedes mosquitoes dengue fever may be mild or even life-threatening and fatal conditions like dengue hemorrhagic disease (DHF) as well as dengue shock syndrome (DSS). The early detection of the disease, proper medical care as well as preventive steps are vital in preventing and limiting the illness.

Types of Dengue Fever

Dengue fever is classified in different forms based on severity and signs. This classification assists in determining the best treatment strategy.

1. Classic Dengue Fever (Mild Dengue Fever) :- This is the most frequent and mild type of dengue fever. It usually manifests with symptoms resembling flu. It typically resolves within a week if you take proper relaxation and water intake.

Symptoms:

  • Extreme fever (104degF or more)
  • Extreme headaches
  • Joint, muscle and bone discomfort
  • A rash on the skin that appears two to five days after the onset of fever
  • Nausea, vomiting, as well as fatigue
  • Minor bleeding (nosebleeds and gum bleeding)

2. Dengue Hemorrhagic Fever (DHF) :- DHF is an extreme type of dengue fever that causes blood vessels to become damaged and can lead to massive bleeding, leakage of blood plasma as well as organ injury. The condition is urgently requiring medical care.

Symptoms:

  • Persistently high fever
  • Extreme abdominal pain
  • Rapid decrease in platelet count
  • The nose may be bleeding gums, under the skin
  • Trouble breathing
  • The signs of internal bleeding like vomiting blood or in stool
  • Refusal or irritation

3. Dengue Shock Syndrome (DSS) :- DSS is considered to be the most serious and life-threatening kind of dengue. It is the most severe and life-threatening form of. It is triggered when blood pressure is dropped to levels that are dangerously low which can lead to organ failure and possibly death.

Symptoms:

  • Extreme abdominal pain
  • Continuous vomiting
  • Rapid, weak pulse
  • Cold, clammy skin
  • Uncertainty and restlessness
  • Severe drop in blood pressure (shock)
  • In extreme cases, multi-organ failure.

Symptoms of Dengue Fever

Dengue fever symptoms usually manifest between 4 and 10, days after being bit by a mosquito infected. The severity of the symptoms vary and ranges from mild flu-like symptoms, to severe life-threatening illnesses.

Common Symptoms of Dengue Fever

1. High fever :- The sudden fever can reach the temperature of 104 degF (40degC) or higher.

2. Extreme Headaches :- Intense pain particularly around the eyes.

3. The muscles and Joint pain :- It is often described as “breakbone fever” due to intense body aches.

4. Skin Rash :- The rash can appear red within 2 to 5 days after the first onset of fever.

5. Vomiting and nausea :- It leads loss in appetite as well as frequent nausea.

6. Weakness and fatigue :- Extreme fatigue as well as general weakness.

Severe Symptoms Indicating Dengue Complications

In rare instances, dengue fever can progress to dengue hemorrhagic fever (DHF) or dengue shock syndrome (DSS), which need immediate medical attention.

1. Severe abdominal pain :- A indicator that there is internal bleeding, or damage to organs.

2. Persistent vomiting :- It can increase the risk of becoming dehydrated.

3. Bleeding Signs :- Nosebleeds and bleeding gums or blood in stool and vomit.

4. Difficulty breathing :- A build-up of fluids within the lungs can lead to breathlessness.

5. Extreme fatigue and weakness :- Potential signs of a recurrence.

When any of the serious symptoms are present, seeking urgent medical attention is essential to avoid the possibility of fatal complications.

Causes of Dengue Fever

Dengue illness is caused Dengue virus. It is part of the Flavivirus Genus. There are 4 distinct types of serotypes, DENV-1 DENV-2 and DENV-3 as well as DENV-4. The infection with one type of serotype gives lifetime immunity against that particular serotype, but not the other serotypes. An additional infection with a different serotype can increase the chance of contracting severe dengue.

How Dengue Spreads

Dengue is transmitted by the bite of infected Aedes mosquitoes and in particular Aedes of aegypti as well as Aedes albopictus. They thrive on stagnant waters, such in flower pots abandoned tires, open water vessels and drains that are blocked.

Modes of Transmission:

1. Mosquito Bite :- If the Aedes mosquito bites an affected person, it transmits the virus and can spread it to other people.

2. Maternal Transmission :- Sometimes pregnant women with the virus may transmit the virus to her child after childbirth.

3. Blood Transfusions as well as Organ Donation :- Although uncommon dengue is transmitted via infected blood and organ donation.

Risk Factors for Dengue Fever

A variety of factors can increase the likelihood for contracting dengue.

1. Residents of or travelling within Endemic Areas :- Regions that have a high percentage of dengue mosquitoes are more prone to exposure.

2. Insufficient Mosquito Control Methods :- Lack of hygiene and stagnant water can contribute to the growth of mosquitoes.

3. Prior Dengue Disease :- A second infection that has a different type of serotype can increase the risk of serious dengue.

4. Infected Immune System :- Patients who suffer from compromised immunity might experience more extreme symptoms.

Prevention of Dengue Fever

Dengue fever prevention involves reducing the spread of mosquitoes as well as protecting people from bites from mosquitoes. Preventive measures that work include:

1. Mosquito Control Strategies :-

  • Eliminate breeding grounds :- Eliminate stagnant water from flower pots, tires that are old or water tank storage containers.
  • Utilize Larvicides :- Use larvicides to apply chemical repellents to water sources that are standing to deter the breeding of mosquitoes.
  • Fogging and spraying :- Local health authorities use fogging of insecticides to decrease mosquito populations in areas at risk.

2. Personal Protection Measures

  • Make use of mosquito Repellents :- Absorb repellents based on DEET on skin exposed and clothing.
  • Wear protective Clothing :- Long-sleeved tops along with long pants and socks can reduce the chance of getting mosquito bites.
  • Utilize Mosquito Nets :- The nets are designed to be mosquito-proof. Sleeping in the insecticide treated nets (ITNs) helps prevent bites, particularly for infants and children.
  • Install screens for Windows as well as Doors :- Stop mosquitoes from gaining entry into workplaces and homes.

3. Dengue Vaccination :- Some countries provide dengue vaccines like Dengvaxia that gives you immunity to various Dengue-related virus types. It is however recommended only for those who have a history of dengue-related illness. Ask a doctor for the eligibility criteria and advice regarding dengue vaccination.

Conclusion

Dengue disease remains a major health risk throughout the world, especially in areas with high mosquito populations. While there isn’t any cure for it, early detection as well as appropriate treatment and preventive measures are able to significantly minimize the severity of complications and even deaths. Community involvement, public awareness in efforts to control mosquitoes, and personal security strategies are vital to preventing dengue’s spread. If you suspect you may have dengue fever, consult a physician immediately to ensure your safety and swift recovery.

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