what is dengue and its symptoms?

Answer 1

Look here ---> http://www.cdc.gov/ncidod/dvbid/dengue/index.htm

Answer 2

This is from the following article linked below, "Dengue fever and dengue hemorrhagic fever (DHF) are acute febrile diseases, found in the tropics, with a geographical spread similar to malaria. This infectious disease is manifested by a sudden onset of fever, with severe headache, muscle and joint pains (myalgias and arthralgias — severe pain gives it the name break-bone fever or bonecrusher disease) and rashes; the dengue rash is characteristically bright red petechia and usually appears first on the lower limbs and the chest - in some patients, it spreads to cover most of the body. There may also be gastritis with some combination of associated abdominal pain, nausea, vomiting or diarrhea.

Some cases develop much milder symptoms, which can, when no rash is present, be misdiagnosed as a flu or other viral infection. Thus, travelers from tropical areas may inadvertently pass on dengue in their home countries, having not being properly diagnosed at the height of their illness. Patients with dengue can only pass on the infection through mosquitoes or blood products while they are still febrile.

The classic dengue fever lasts about six to seven days, with a smaller peak of fever at the trailing end of the fever (the so-called "biphasic pattern"). Clinically, the platelet count will drop until the patient's temperature is normal.

Cases of DHF also shows higher fever, haemorrhagic phenomena, thrombocytopenia and haemoconcentration. A small proportion of cases leads to dengue shock syndrome (DSS) which has a high mortality rate."

Answer 3

Dengue fever is a disease caused by a virus spread by the bite of an infected mosquito, uncommon in Wisconsin. The disease is common in most tropical and subtropical areas (including some islands in the Caribbean, Mexico, most countries of South and Central America, the Pacific, Asia and parts of tropical Africa). Cases originating in the United States are virtually unknown, but occasionally residents from or visitors to countries where dengue fever occurs may arrive in this country and develop dengue fever.

Dengue fever is characterized by the rapid development of a fever that may last from three to seven days, intense headache, joint and muscle pain, loss of appetite, diarrhea and a rash. The rash develops on the feet or legs 3 to 4 days after the beginning of the fever.

Symptoms of dengue hemorrhagic fever (DHF) include disorders in blood clotting that can result in internal bleeding. DHF is more severe and associated with loss of appetite, vomiting, high fever, headache and abdominal pain. Shock and circulatory failure may occur. Untreated hemorrhagic dengue results in death in up to 50 percent of cases.