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Dengue is an illness caused by a virus that is spread through mosquito bites. Symptoms include fever, headache, nausea, vomiting, rash, and pain in the eyes, joints, and muscles. After you are bitten by a contaminated mosquito, indications can take up to 2 weeks to expand but generally end in a week. In stern cases, symptoms might contain severe stomach pain, frequent vomiting, bleeding from the nose or gums, and death.

In several cases, dengue turns into dengue hemorrhagic fever, which causes bleeding from your nose, gums, or under your skin. It can also become dengue shock disorder, which causes enormous bleeding and shock. These forms of dengue are life-threatening.

Causes of Dengue Fever

Four intimately related viruses source dengue fever. The viruses are transmitted by Aedes aegypti and Aedes albopictus mosquitoes to humans in a viral life cycle that requires both humans and these mosquitoes. There is no human-to-human dengue fever transmission. Once a mosquito is contaminated, it remains polluted for its life duration. A human can contaminate mosquitoes when the human has a high number of viruses in the blood (right before symptoms grow).


A lot of people, particularly children and adolescence, might occurrence no signs or symptoms during a mild case of dengue fever. When symptoms do happen, they typically start four to seven days after you are bitten by a contaminated mosquito.

Dengue fever reasons a high fever — 104 F degrees — and at least two of the following symptoms:

  • Muscle, bone and joint pain
  • Nausea or Vomiting
  • Swollen glands
  • Headache
  • Pain behind the eyes

The majority people get well within a few days or so. In a few cases, symptoms get worse and can turn into life-threatening. Blood vessels often become spoiled and absorbent. This can reason a harsh form of dengue fever, called dengue hemorrhagic fever, stern dengue, or dengue shock syndrome.

Signs and symptoms of dengue hemorrhagic dengue fever contain:

  • Stern abdominal pain
  • Complicated or rapid breathing
  • Bleeding under the skin, which might look like bruising
  • Constant vomiting
  • Blood in your urine, stools or vomit
  • Fatigue
  • Irritability or restlessness

Sometimes, symptoms are mild and can be misguided for those of the flu or another viral contamination. Children and people who have not at all had the disease before tend to have milder cases than older children and adults. However, severe troubles are able to expand. These contain dengue hemorrhagic fever, an exceptional difficulty characterized by high fever, damage to lymph and blood vessels, the growth of the liver, and breakdown of the circulatory system. The symptoms might development to enormous bleeding, shock, and death. This is called dengue shock syndrome (DSS).


Doctors can identify dengue contagion with a blood test to test for the virus or antibodies to it. Diagnosing dengue fever can be complicated, for the reason that its signs and symptoms can be simply perplexed with those of other diseases — such as malaria, leptospirosis and typhoid fever.

If you become sick after traveling to a tropical area, let your physician discern. This will permit your physician to estimate the risk that your symptoms were caused by a dengue contamination. Your physician will probably inquire about your medicinal and travel history. Be certain to explain global trips in fact, including the countries you visited and the dates, as well as any contact you may have had with mosquitoes.

Assured laboratory tests can identify an indication of the dengue viruses, but test results generally come back too late to aid direct cure decisions.


There is no particular medication to care for dengue contagion. Your physician may suggest that you drink plenty of fluids to stay away from dehydration from sickness and a high fever. If you assume you might have dengue fever, you should use pain relievers with acetaminophen and keep away from medicines with aspirin, which could degenerate bleeding.

While improving from dengue fever, watch for signs and symptoms of dehydration. Call your physician right away if you expand any of the subsequent:

  • Decreased urination
  • Dry mouth or lips
  • Tiredness or confusion
  • Cold or moist extremities

If you found to suffer worse in the first 24 hours after your fever goes down, you should get to a hospital instantly to be checked for complications.


Acetaminophen (Tylenol, others) can lighten pain and decrease fever. Avoid pain relievers that can enlarge bleeding complications — such as aspirin, ibuprofen (Advil, Motrin IB, others) and naproxen sodium (Aleve, others).

If you have harsh dengue fever, you may require:

  • Blood pressure monitoring
  • Supportive concern in a hospital
  • Intravenous (IV) fluid and electrolyte substitute
  • Transfusion to replace blood loss.


There is no vaccine to prevent dengue fever. The finest method to avert the disease is to prevent bites by contaminated mosquitoes, mostly if you are living in or traveling to a tropical area.

One dengue fever vaccine, Dengvaxia, is presently permitted for applying in those ages 9 to 45 who live in areas with an elevated occurrence of dengue fever. The vaccine is given in three doses over the course of 12 months. Dengvaxia prevents dengue contagions a little more than half the time.

The World Health Organization stresses that the vaccine is not a helpful implement, on its possession, to decrease dengue fever in areas where the sickness is regular. Controlling the mosquito inhabitants and human contact is still the majority serious component of prevention efforts. So for now, if you’re living or traveling in a region where dengue fever is identified to be, the finest approach to keep away from dengue fever is to avoid being bitten by mosquitoes that transmit the disease.

To protect yourself:

  • Stay away from heavily inhabited residential areas, if feasible.
  • Use mosquito repellents, even at home.
  • When outside, wear long-sleeved shirts and long pants tucked into socks.
  • When at home, use air conditioning if obtainable.
  • Make sure window and door screens are secure and free of holes. If sleeping areas are not screened or air-conditioned, use mosquito nets.

To reduce the mosquito population, get rid of places where mosquitoes can breed. These contain old tires, cans, or flower pots that collect rain.