It would be quite funny to automatically check yourself after a mosquito bite for signs of dengue fever, but it does pay to know its symptoms. The signs of dengue fever may only start to show three to fifteen days after being bitten. The patient will experience chills, and headache. There would also be pain upon moving the eyes, the lower back, and joints. Temperature due to fever can rise up to 104� F (40� C). Heart rate and blood pressure becomes low. Eyes redden and a pink rash appears then disappears over the face. Lymph nodes are also swollen. If any of these signs strike, it is best to check into a hospital immediately.
Source: MedicineNet