Dengue fever is a viral infection caused due to mosquito bites in the day time. It is common during the monsoons. The virus can cause fever, headache, pain and rashes throughout the body. Symptoms of this viral infection include drop in the platelet counts, bleeding from the nose, gums and under the skin which looks like bruising. In severe cases, patients may experience sudden blood pressure shock. Dengue can be diagnosed by card test and Elisa test. If the platelet count is very low, the patient should be hospitalized for further treatment. To prevent dengue, one must not allow water to stagnate and maintain proper sanitation around the house. Watch this video to know more about the treatment options.