Dengue fever is a painful, debilitating mosquito borne disease caused by anyone of the four closely related dengue viruses. Every year 400 millions dengue infections occur worldwide each year. Mostly occur in tropical areas of world like South East Asia, India, Taiwan, Mexico, Africa, Central and South America. Symptoms occurs after four to six days of Infection sudden fever, severe headache, Vomiting, Skin rash. Diagnosis of Dengue and its precautions are very important. Take some precautions like door, windows has been covered and proper use of mosquito net in a home.