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  1. Fever - Wikipedia

    May 23, 2020 · Fever, also referred to as pyrexia, is defined as having a temperature above the normal range due to an increase in the body's temperature set point. There is not a single agreed-upon upper limit for normal temperature with sources using values between 37.2 and 38.3 °C (99.0 and 100.9 °F) in humans.

  2. Why does your body temperature rise when you have a virus ...

    May 04, 2020 · When your body temperature rises because of an infection, it's called a fever. Fevers are caused by chemicals called pyrogens flowing in the bloodstream. Pyrogens make their way to the hypothalamus in the brain, which is in charge of regulating body temperature. When pyrogens bind to certain receptors in the hypothalamus, body temperature rises.

  3. Pyrexia definition and meaning | Collins English Dictionary

    Pyrexia definition: → fever | Meaning, pronunciation, translations and examples

  4. Fever: MedlinePlus Medical Encyclopedia

    May 18, 2020 · Fever is the temporary increase in the body's temperature in response to a disease or illness. A child has a fever when the temperature is at or above one of these levels: An adult probably has a fever when the temperature is above 99°F to 99.5°F (37.2°C to 37.5°C), depending on the time of day. Normal body temperature may change during any ...

  5. 8 Possible Reasons of Recurrent Fever in Child | New Health ...

    3 days ago ·

    • Dental Abscess. An infected tooth can cause a dental abscess to form in the mouth. The infection can cause recurrent fevers when the abscess flares from time to time until the infection invades the bloodstream and becomes constant.
    • Periodic Fever Syndrome. This is a genetic syndrome inherited from parents that causes fever in children without the presence of an infection. It is a gene mutation and most children are perfectly well between flares of the disorder.
    • Cyclic Neutropenia. This disorder occurs when the white blood cell count drops. The white blood cells fight infection in the body by killing off bacteria.
    • Borrelia Burgdorferi. Borrelia is the bacterium that causes Lyme disease. You get this from being bit by an infected tick. It is usually deer ticks that carry borrelia and common on the East coast, although you can get it anywhere in the United States.
  6. What Causes Heart Murmurs in Adults? (with pictures)

    May 20, 2020 · The most common cause of heart murmurs in adults is any condition that affects the heart valves. Heart murmurs can also be caused by hyperthyroidism, pregnancy, strenuous physical activity, fever, and anemia. Any alteration in the structure of the heart, including heart surgery, infection, or aging, can also be a trigger. There are two kinds of ...

  7. What Causes Persistent Low Grade Fever? How to Help? | New ...

    Persistent low grade fever becomes a concern in people with compromised immune systems, elderly people, and small babies less than three months of age. Any fever in these groups should be evaluated by a doctor. Many doctors will reassure you not to worry and only advise treating a fever if it goes above 102 degrees.

  8. What Causes Fluctuating Fever in Toddler? | Healthcare-Online

    A fever in a toddler can signal an infection or illness, and a fluctuating one may mean something more serious. Fevers are a normal part of the body trying to fight something, and they usually go away once they are better. If your toddler is having fevers that fluctuate or come and go, it is probably a good idea to get things checked out.

  9. Heart Murmur Guide: Causes, Symptoms and Treatment Options

    About 10% of adults and 30% of children (most between the ages of 3 and 7) have a harmless murmur produced by a normal heart. This type of murmur is also called an innocent murmur. A heart murmur may indicate a structural abnormality of a heart valve or heart chamber, or it may be due to an abnormal connection between two parts of the heart.