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7 Warning Signs of Dengue Fever: Symptoms, Types, Stages & Treatment Guide

IRIS IRIS
April 15, 2026
10 mins read
IRIS

While you are enjoying the rainy season, the cool breeze, and the pleasant weather, there is a concern quietly building up in the background that needs your attention. The monsoon creates a perfect breeding environment in the background, increasing the risk of mosquito-borne diseases like dengue fever.

If ignored, dengue can become a life-threatening condition; hence, early detection of symptoms becomes crucial. Hence, if you notice these 7 early symptoms of dengue (high-grade fever; severe headache, severe joint and muscle pain; skin rash; nausea and vomiting; bleeding gums, nosebleeds, or easy bruising; or extreme fatigue), contact your doctor immediately for the right treatment guide.

Read Also: Child Fever Treatment in Kolkata: When to Visit a Pediatrician & What to Expect

What is Dengue Fever?

Dengue fever is an illness spread by the bite of a female Aedes mosquito (mainly Aedes aegypti) infected with one of four dengue viruses (DENV‑1, DENV‑2, DENV‑3, or DENV‑4).

The fever of dengue can affect people of all ages, and the intensity can range from mild to severe to life-threatening. There is no specific treatment for it; early detection of symptoms and preventing dehydration are two of the important steps.

7 Warning Signs of Dengue Fever That Need Your Attention, Especially During Monsoon Season

If you are wondering, "What are the symptoms of dengue?" then there are the seven top signs that you must recognise early while enjoying the rain:

S.No. Warning Sign What You May Notice How The Symptom Happens
1 High, persistent fever, not responding with usual medicines Sudden fever (often 101–104°F) which can last upto 2–7 days The invasion of dengue virus activates your immune system to against them.
2 Severe headache and pain behind the eyes Extreme frontal headache, pressure or pain when moving the eyes Inflammation of tissues and blood vessels in the head and around the eyes.
3 Muscle, joint, and body pain Deep muscle aches, joint pain, feeling of “bones breaking", extreme fatigue Immune response causes inflammation in your muscle and joints.
4 Nausea, vomiting, and poor appetite Repeated vomiting, inability to eat or drink, feeling constantly sick High fever and infection disturb your stomach and the brain’s vomiting center.
5 Skin rash or red spots Reddish rash, tiny red dots or patches on arms, legs, chest, or trunk Blood components escape into the skin, causing rashes and redness.
6 Signs of Bleeding Bleeding gums, nosebleeds, easy bruising, blood in vomit or stools The platelet count decreases, and the clotting process becomes weak.
7 Abdominal pain and breathlessness Persistent stomach pain, tenderness, swelling, difficulty breathing, restlessness Fluid may enter from blood vessels into the abdomen and chest.

Types of Dengue

Here are the four main types (serotypes) of dengue virus:

  • DENV‑1 (most common)
  • DENV‑2
  • DENV‑3
  • DENV‑4

4 Stages of Dengue Fever

There are mainly three stages of dengue fever; however, for easy understanding, you can break it down into 4 stages, such as

1. Incubation Period

It happens 4–10 days after the bite of a female Aedes mosquito. In this stage, the virus multiplies in your body, but you may not experience any symptoms.

2. Febrile (Fever) Stage

It happens between days 1 and 3 (up to 7 days). There can be a presence of these seven symptoms, such as sudden high fever (that does not respond to normal medicine), severe headache, eye pain, muscle–joint pain, nausea, vomiting, and a rash.

3. Critical Stage

Around day 3–7 (when the fever falls). You can experience abdominal pain, vomiting, breathing difficulty, low platelets, fluid leakage, and bleeding.

4. Recovery (Convalescent) Stage

Next 2–3 days after the critical phase. If you follow the doctor's advice, your symptoms slowly disappear, and normal body function is restored. 

Can Dengue Fever Spread

It cannot spread person to person. However, it can spread through the bite of infected Aedes mosquitoes.

Conclusion

Internal Medicine (General Medicine) specialists at IRIS Multispeciality Hospital say there is no specific antiviral medicine that cures dengue. 

However, their treatment focuses on supportive care that helps relieve your symptoms and encourages quick recovery.

  • Adequate fluid intake (oral ORS, water, soups).
  • Medicines for fever control.
  • Intravenous fluids, blood components, oxygen support and intensive monitoring in severe cases.

If you notice any 7 warning signs of dengue fever, you can contact an expert at IRIS Multispeciality Hospital by calling +91 8929579509 and get personalised treatment.

Our Address: 82/1, Raja S. C. Mullick Road, Kolkata 700047 Open: 24x7

Our Internal and General Medicine Experts:

FAQs

Q1: How serious is dengue fever?
A: If acted upon early, symptoms are manageable. However, severe dengue can be fatal. Follow the supportive care advised by your doctor.

Q2: What are 5 ways to prevent dengue?
A: The five symptoms are the following:

  • Eliminate standing water
  • Use mosquito repellents
  • Installing window screens
  • Wear clothes that cover as much of your body as possible
  • Stay informed and take preventive measures
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