Dengue fever
General awareness information for residents and visitors in Thailand.
Generally
Dengue is a mosquito-borne viral infection that can cause fever, headache, pain behind the eyes, muscle and joint pain, and rash. Symptoms can occasionally become severe and require hospital care.
The mosquitoes that spread dengue are active mainly during the day. Mosquito repellent, suitable clothing and reducing standing water around the home can help lower the risk of bites.

Symptoms
- High fever
- Headache or pain behind the eyes
- Muscle and joint pain
- Rash or small red spots
- Nausea or unusual tiredness
When to seek care
If you develop high fever or become significantly unwell, especially while in Thailand or shortly after travel, seek medical advice promptly. Severe abdominal pain, persistent vomiting, bleeding, marked weakness or breathing difficulty require urgent medical attention.
This page is general information only and should not replace advice from a healthcare professional. We will review the health content before the new website goes live.
