Dengue fever occurs mostly in summer and is mainly spread by mosquitoes, especially the flower-footed mosquito, which is the main route of transmission. There are many symptoms of dengue fever, including fever, etc. Of course. The harm of dengue fever is far more than that, and the complications it causes are also very many, which may be life-threatening if not treated in time.

Most of the onset of fever is sudden, and the body temperature quickly reaches above 39℃, generally lasting for 2 ~ 7 days, and the heat type is irregular. In some cases, the body temperature drops to normal on the third to fifth day, and then rises again after one day, showing bimodal fever or saddle fever. Children’s cases have a slow onset and a low fever. The onset is accompanied by headache, back pain, muscle and joint pain, orbital pain, retrobulbar pain and other systemic symptoms. There may be digestive tract symptoms such as hypersensitivity, nausea, vomiting, abdominal pain, poor appetite, diarrhea and constipation. The face and conjunctiva are congested, and the skin on the neck and upper chest is flushed. A relatively slow pulse may appear during the fever period.