The early use of break-bone fever Quebranta huesos, and dengue in Spanish. World Health Organization. Aa Aa Aa. What Is Dengue Fever? Dengue is an infectious disease caused by dengue viruses, which are transmitted to humans by mosquitoes. The rising level of dengue infections has become a serious international concern. When was dengue first reported, and how was the disease named? What are the symptoms of dengue? Is there a cure? In this section, we will explore the answers to these questions.
Dengue Facts. Figure 1: Countries and areas at risk of dengue transmission in The countries and areas at risk of dengue transmission are shaded in orange, and the geographical extension of dengue is indicated in red. History of Dengue. Rising Dengue Infections. What Are the Symptoms of Dengue Fever? Figure 2: Dengue fever symptoms. The symptoms of dengue include a fever, headache, severe body and joint pain, and a rash.
Severe Dengue. Is There a Cure for Dengue Infections? Currently, there is no cure or specific medication to treat dengue infections. Individuals who believe that they may have dengue should consult a physician. The pain symptoms associated with dengue can be managed with pain relievers that do not increase the risk of bleeding. In addition, dengue patients require rest and fluids. It is important that patients with dengue be carefully monitored for signs of severe dengue so that they can be treated with fluid replacement in a timely manner and make a full recovery.
Approximately 2. The symptoms of dengue can vary widely, although some patients have no symptoms at all. The classic symptoms of dengue include a high fever, severe pain in the muscles, bones, and joints, pain behind the eyes, severe headaches, nausea and vomiting, and a rash. Most patients recover from dengue infections with rest and fluids. Some patients develop severe dengue, a more serious condition that occurs when blood plasma leaks through the capillaries.
Severe dengue can lead to internal bleeding, shock, and organ failure. When treated quickly with intravenous fluid replacement, most patients recover from severe dengue.
There is currently no cure for dengue and no vaccine to prevent dengue infections. Geneva: World Health Organization, Topic rooms within Cell Biology Close. No topic rooms are there. Or Browse Visually. Student Voices. Creature Cast. Simply Science. Green Screen. Green Science. Bio 2. The Success Code. Why Science Matters. The Beyond. Plant ChemCast. Call your doctor if your temperature is F Seek immediate medical attention if any of these signs or symptoms accompanies a fever:.
Fever occurs when an area in your brain called the hypothalamus hi-poe-THAL-uh-muhs — also known as your body's "thermostat" — shifts the set point of your normal body temperature upward. When this happens, you may feel chilled and add layers of clothing or wrap up in a blanket, or you may shiver to generate more body heat, eventually resulting in an elevated body temperature.
Normal body temperature varies throughout the day — it's lower in the morning and higher in the late afternoon and evening. Although most people consider Sometimes the cause of a fever can't be identified. If you have a fever for more than three weeks and your doctor isn't able to find the cause after extensive evaluation, the diagnosis may be fever of unknown origin. Children between the ages of 6 months and 5 years may experience fever-induced convulsions febrile seizures , which usually involve loss of consciousness and shaking of limbs on both sides of the body.
Although alarming for parents, the vast majority of febrile seizures cause no lasting effects. Most seizures stop on their own.
Take your child to the doctor as soon as possible after the seizure to determine the cause of the fever. You may be able to prevent fevers by reducing exposure to infectious diseases. Here are some tips that can help:. Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission. This content does not have an English version. This content does not have an Arabic version. Overview A fever is a temporary increase in your body temperature, often due to an illness.
Request an Appointment at Mayo Clinic. Share on: Facebook Twitter. Show references Goldman L, et al. Approach to fever or suspected infection in the normal host. In: Goldman-Cecil Medicine. Philadelphia, Pa. Accessed April 5, Merck Manual Professional Version. Ear infections may be caused by a bacterial or viral infection. They can cause a buildup of liquid inside the middle ear. This causes pressure and pain in and around the ear. Ear infections can cause headaches and fever. See your doctor if you or your child has an ear infection.
Some cases can cause lasting damage to the ears. Symptoms include:. Fever and headache pain are among the first symptoms of meningitis. This serious illness happens when an infection attacks the lining around the brain and spinal cord. A meningitis infection is usually caused by a virus, though bacterial and fungal infections can also be the cause. Meningitis can happen to both children and adults. It can be life-threatening and requires urgent medical treatment.
Look for these symptoms of meningitis:. Heatstroke is also called sunstroke. Heatstroke happens when your body overheats. Exercising too much at a time in hot weather can also cause lead to heatstroke.
You may also have a throbbing headache. Other symptoms of heatstroke include:. Rheumatoid arthritis RA and other kinds of inflammatory conditions may trigger fevers and headache pain. This kind of arthritis happens when your body mistakenly attacks your joints and other tissues. About 40 percent of people with RA also have pain and other symptoms in areas such as the:.
If you have RA, you may have a higher risk of infections. Some medications to treat RA and other autoimmune diseases can also raise your risk. This is because they work by slowing down immune system activity. Infections, medications, and stress due to RA may indirectly cause fever and headaches. Other symptoms of RA include:. Taking too much pain-relieving medication, or taking it too often, can also cause headaches and other symptoms.
These include migraine medications, opioids, and over-the-counter pain relief medications. Fever and headache pain may happen after getting a vaccine. Most vaccines may cause a slight fever within 24 hours , and last one to two days. Some immunizations can cause a delayed reaction.
The MMR and chickenpox vaccines can cause a fever one to four weeks after getting it. You may get a fever and headache because your body is reacting to the vaccine as it builds immunity against disease. Other symptoms include:. Cancer and other serious illnesses can cause fever and headache pain. This is sometimes a sign that you also have an infection. In other cases, changes in the body due to illness or a tumor can trigger a fever.
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