Dengue Fever (DF) is a tropical disease caused by enveloped  single stranded RNA flavivirus that is transmitted by the bite of female Aedes aegypti mosquito(1). Dengue fever is usually non–specific and self–limiting, biphasic febrile illness but the presentation may range from being asymptomatic to dengue fever, dengue hemorrhagic fever and dengue shock syndrome(2). Typical dengue fever is characterized by high– grade fever, musculoskeletal pain, retrobulbar headaches, joint pain, nausea, vomiting and morbilliform rash(2). Headache and abdominal pain are common manifestations(2–4) Dengue is widely distributed in many countries in southeast and southern Asia, Central and South America, and the Western Pacific regions.(5) the incidence of dengue fever and dengue haemorrhagic fever (DHF) has increased thirty folds globally in the last four decades and more than half the worlds population (including developed countries) is now threatened with infection from dengue virus .