Dengue fever is a disease caused by a family of viruses that are transmitted by mosquitoes. The presence of fever, rash, and headache (the "dengue triad") is characteristic of dengue fever.
In some cases the disease develops into the life-threatening dengue hemorrhagic fever, resulting in bleeding, low levels of blood platelets and blood plasma leakage, or into dengue shock syndrome, where dangerously low blood pressure
Because dengue fever is caused by a virus, there is no specific medicine or antibiotic to treat it. For typical dengue fever, the treatment is directed toward relief of the symptoms (symptomatic treatment) and includes adequate rehydration.