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Understanding Malaria and Dengue

Understand the key differences and similarities between malaria and dengue, including causes, symptoms, transmission, and treatment options. Learn how to prevent these mosquito-borne diseases and when to seek medical help.

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Written by Dr. Vasanthasree Nair

Reviewed by Dr. Md Yusuf Shareef MBBS

Last updated on 21st Aug, 2025

Introduction

Malaria and dengue are two common mosquito-borne illnesses that affect millions of people worldwide, especially in tropical and subtropical regions. While both diseases are spread by mosquitoes, they are caused by different pathogens and have distinct symptoms. Understanding these illnesses can help you recognize early signs, take preventive measures, and seek timely treatment.

What Are Malaria and Dengue?

Malaria and dengue are mosquito-borne diseases that cause high fever, chills, and body aches, and can lead to serious health complications if untreated.

Malaria

Malaria is caused by a parasite called Plasmodium, which is transmitted through the bite of an infected female Anopheles mosquito. There are different types of Plasmodium parasites, with P. falciparum being the most dangerous.

Dengue

Dengue, on the other hand, is caused by the dengue virus (DENV), spread by the Aedes aegypti mosquito. Unlike malaria, dengue is a viral infection, and severe cases can lead to dengue hemorrhagic fever, which can be life-threatening.

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Symptoms to Watch For

Watch for symptoms like:

Malaria Symptoms

  • High fever with chills and sweating

  • Headache and body aches

  • Fatigue and weakness

  • Nausea and vomiting

  • In severe cases: confusion, seizures, or organ failure

Symptoms usually appear 10–15 days after the mosquito bite.

Dengue Symptoms

  • Sudden high fever (up to 104°F)

  • Severe headache, especially behind the eyes

  • Muscle and joint pain (often called "breakbone fever")

  • Skin rash (appearing 2–5 days after fever)

  • Mild bleeding (nose or gum bleeding, easy bruising)

  • In severe cases: abdominal pain, persistent vomiting, rapid breathing

Symptoms typically appear 4–10 days after the mosquito bite.

How Are They Different?

Here are some key differences that can help you differentiate between Malaria and Dengue.

FeatureMalariaDengue
CauseParasite (Plasmodium)Virus (Dengue virus)
Mosquito TypeAnopheles (bites at night)Aedes aegypti (bites during the day)
Fever PatternRecurrent (every 48–72 hours)Continuous high fever
PainGeneral body achesSevere joint and muscle pain
RashRareCommon (red spots)

How Do They Affect Your Health?

Both malaria and dengue can weaken the body, causing high fever, weakness, and in severe cases, serious health problems.

Malaria Complications

  • Severe anaemia (low red blood cells)

  • Brain damage (cerebral malaria)

  • Kidney failure

  • Respiratory distress

Dengue Complications

  • Dengue hemorrhagic fever (severe bleeding)

  • Shock (dangerously low blood pressure)

  • Organ damage

Both diseases can be fatal if not treated promptly.

Prevention Tips

Since mosquitoes spread both malaria and dengue, prevention focuses on avoiding bites:

1. Use Mosquito Repellents – Apply creams or sprays containing DEET, picaridin, or oil of lemon eucalyptus.

2. Wear Protective Clothing – Long sleeves and pants reduce exposure.

3. Sleep Under Nets – Insecticide-treated mosquito nets help prevent malaria.

4. Eliminate Stagnant Water – Aedes mosquitoes breed in clean water (flower pots, buckets, tires).

5. Use Screens & Air Conditioning – Keep mosquitoes out of your home.

Treatment Options

The treatment options include:

Malaria Treatment

  • Antimalarial drugs (e.g., chloroquine, artemisinin-based therapy)

  • Early diagnosis through blood tests is crucial.

Dengue Treatment

  • No specific antiviral treatment exists; care is supportive.

  • Stay hydrated (oral rehydration or IV fluids if severe).

  • Avoid aspirin (can increase bleeding risk).

Important: If you suspect malaria or dengue, consult a doctor immediately. Severe cases may require hospitalization.

When to Seek Medical Help?

Seek emergency care if you experience:

  • Persistent high fever

  • Severe headache or confusion

  • Difficulty breathing

  • Blood in vomit or stool

  • Extreme fatigue

Can Diet Help in Recovery?

Yes! Eating right can support your immune system:

For Malaria:

  • Iron-rich foods (spinach, lentils) to combat anaemia.

  • Hydrating fluids (coconut water, soups).

For Dengue:

  • Papaya leaf extract (may help increase platelet count).

  • Vitamin C-rich foods (oranges, guava) to boost immunity.

Final Thoughts

Malaria and dengue are serious but preventable diseases. By taking precautions against mosquito bites and recognizing early symptoms, you can protect yourself and your family. If you experience any warning signs, don’t delay; consult a doctor right away.

Consult a Top General Physician for the best advice

Dr. Kumari Nisha, General Physician/ Internal Medicine Specialist

Dr. Kumari Nisha

General Physician/ Internal Medicine Specialist

5 Years • MBBS

Bengaluru

PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru

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60 Cashback

Dr. Abhishek Gowda, General Physician/ Internal Medicine Specialist

Dr. Abhishek Gowda

General Physician/ Internal Medicine Specialist

2 Years • MBBS

Bengaluru

PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru

400

Dr Chilukuri Venkata Reddy, General Physician

Dr Chilukuri Venkata Reddy

General Physician

4 Years • MBBS

Bengaluru

PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru

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60 Cashback

Dr. Pooja, General Physician

Dr. Pooja

General Physician

3 Years • MBBS

Bengaluru

PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru

400

60 Cashback

Consult a Top General Physician for the best advice

Dr. Kumari Nisha, General Physician/ Internal Medicine Specialist

Dr. Kumari Nisha

General Physician/ Internal Medicine Specialist

5 Years • MBBS

Bengaluru

PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru

400

60 Cashback

Dr. Abhishek Gowda, General Physician/ Internal Medicine Specialist

Dr. Abhishek Gowda

General Physician/ Internal Medicine Specialist

2 Years • MBBS

Bengaluru

PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru

400

Dr Chilukuri Venkata Reddy, General Physician

Dr Chilukuri Venkata Reddy

General Physician

4 Years • MBBS

Bengaluru

PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru

400

60 Cashback

Dr. Pooja, General Physician

Dr. Pooja

General Physician

3 Years • MBBS

Bengaluru

PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru

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60 Cashback

Dr. Imtiyaz Khan, General Physician/ Internal Medicine Specialist

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