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WHAT IS FEVER (PYREXIA)?

Fever is defined as an elevation of the body temperature that exceeds the normal daily variation of 36.5°C -37.5 °C or (97.7°F -99.5°F). This is because the core body temperature varies throughout the day with temperatures being low in the morning and highest in the evening. Fever of more than 106.7°F is defined as hyperpyrexia.

WHAT ARE THE CAUSES OF FEVER?

The causes of fever can be:

  • Any substance that causes fever is called a pyrogen.
  • Exogenous pyrogens are the ones derived from outside of the patient. A classic example is endotoxins, which are produced by most of the gram-negative bacteria.
  • Gram positive bacteria produce enterotoxins, whereas viruses as a whole act as pyrogens which cause fever.
  • Endogenous pyrogens-also called pyrogenic cytokines are the ones which regulate the immune and inflammatory responses.
  • Bacterial / viral / fungal infections can cause fever
  • Trauma/tissue necrosis
  • CNS hemorrhage
  • Some auto immune diseases

WHAT ARE THE SYMPTOMS ASSOCIATED?

Symptoms of Fever include:

  • Shivering is usually associated with fever.
  • Dehydration is also seen along with it.
  • Lethargy/lack of appetite and generalized weakness and malaise.

If you find yourself experiencing these symptoms or don’t know why you are getting fever, you can simply book a doctor appointment who will guide you correctly.

WHAT IS THE TREATMENT FOR FEVER?

Identifying the cause of fever by doing a few lab tests can help treat the patient better.

OTC drugs such as paracetamol/ibuprofen effectively reduce fever but in mild cases it is better to refrain using as it is a sign that the body is combating the infection.

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