Dengue fever is a mosquito-borne viral infection found in tropical and subtropical regions, including parts of Asia, Africa, and South America. It’s caused by the dengue virus, which is spread by the Aedes mosquito. One of the most recognisable signs of dengue fever is the rash that appears on the skin during infection. Understanding what a dengue fever rash looks like, when it appears, and how to protect yourself is key to staying safe while travelling.
What Is Dengue Fever?
Dengue fever is caused by the bite of an infected Aedes aegypti mosquito, which is most active during the daytime. The illness can range from mild to severe, and while many people recover within a week or two, some cases can progress to a more serious form known as dengue haemorrhagic fever or dengue shock syndrome.
Early diagnosis and supportive care are essential in managing the condition and preventing complications.
Recognising the Symptoms of Dengue Fever
The symptoms of dengue usually appear between 4 and 10 days after being bitten by an infected mosquito. The illness often begins with flu-like symptoms that can be mistaken for other infections.
- –> High fever (up to 40°C)
- –> Severe headache, often behind the eyes
- –> Muscle and joint pain (“breakbone fever”)
- –> Nausea and vomiting
- –> Fatigue and general weakness
- –> Swollen glands
- –> Rash appearing a few days after the fever starts
Among these, the rash is one of the key identifying signs of dengue fever and can help distinguish it from other viral illnesses.
What Does the Dengue Fever Rash Look Like?
The dengue rash usually develops 2 to 5 days after the fever begins. It can appear in different forms depending on the stage of infection.
- –> Early stage rash: Small red spots or patches may appear on the chest, back, or limbs. These spots can look like measles or a mild sunburn.
- –> Later stage rash: The rash can spread to other areas, including the face and arms. In some cases, small bruises or pinpoint red spots may develop as a result of bleeding under the skin.
- –> Itchy phase: As the fever subsides, the rash may start to itch as the body begins to heal.
While the rash itself isn’t dangerous, it indicates that the body’s immune system is responding to the infection. However, it’s important to monitor for other symptoms such as persistent vomiting, bleeding gums, or severe abdominal pain — these could suggest a more serious form of the disease that requires medical attention.
How Is Dengue Fever Diagnosed?
Diagnosis is usually confirmed through blood tests that detect the virus or antibodies in your system. If you’ve recently travelled to an area where dengue is common and develop a rash with high fever, you should see a healthcare professional immediately. Early diagnosis can help manage symptoms and reduce the risk of complications.
Prevention: Avoiding Mosquito Bites
There is currently no specific antiviral treatment for dengue fever, which makes prevention crucial. The best way to protect yourself is to avoid mosquito bites — especially during the day, when Aedes mosquitoes are most active.
Practical Tips to Prevent Mosquito Bites
- –> Use insect repellents containing DEET, picaridin, or lemon eucalyptus oil on exposed skin.
- –> Wear long-sleeved clothing and trousers to reduce exposed skin.
- –> Sleep under mosquito nets when travelling in high-risk areas.
- –> Keep doors and windows closed or use screens to prevent mosquitoes from entering your accommodation.
- –> Eliminate standing water where mosquitoes breed, such as plant pots, buckets, and puddles.
At Market Harborough Pharmacy, we offer travel health consultations to help you prepare for trips to dengue-affected regions. Our pharmacists can advise on insect repellents, bite prevention products, and other travel essentials to keep you protected.
When to Seek Medical Help
If you suspect you have dengue fever or notice a rash developing after being bitten by a mosquito abroad, it’s important to seek medical attention promptly. Warning signs that require immediate care include:
- –> Severe abdominal pain or persistent vomiting
- –> Bleeding from the nose or gums
- –> Difficulty breathing
- –> Extreme fatigue or restlessness
- –> Rapid decline in fever followed by worsening symptoms
Do not take anti-inflammatory painkillers like ibuprofen or aspirin, as these can increase the risk of bleeding. Instead, paracetamol can be used to help manage fever and discomfort — but always consult a healthcare professional first.
Stay Protected When Travelling
Dengue fever is preventable with the right precautions. Whether you’re travelling for business or leisure, taking steps to protect yourself from mosquito bites can make a big difference. Simple measures like using DEET repellent and wearing protective clothing go a long way in reducing your risk.
Our team at Market Harborough Pharmacy provides expert travel health advice, ensuring you have everything you need for a safe and healthy trip abroad — from mosquito bite prevention to vaccinations for other travel-related diseases.
Book Now for Expert Travel Health Advice
Planning a trip to a region where dengue fever is common? Visit Market Harborough Pharmacy for personalised travel health support, including advice on mosquito bite prevention and essential products for your journey.
Book now to arrange your consultation and prepare for safe, worry-free travel.
This blog was written on behalf of Market Harborough Pharmacy by Pharmacy Mentor.
