Fever – helping the body to fight infection

Fever is not a disease but rather a symptom or protective response of the body. 
It indicates that the body is reacting to a disease, typically an infectious one.


Fighting pathogens

The hypothalamus, a control centre in the brain, increases the body temperature in response to invading pathogens. Elevated temperatures allow biochemical processes in the body to run faster. Pathogen defence is one such process. As a result, we feel tired and weak, which is a way for the body to force us to rest and save energy.

Why do I feel cold when I have a fever?

Most people feel cold when they have a fever, despite the fact that their body temperature is elevated. This is because the core body temperature is raised at the expense of blood flow to the skin. Constriction of the blood vessels in the skin reduces the release of heat and fluids, so that the temperature inside the body rises while extremities stay cold.

Common causes of fever

  • Infectious diseases

- Viral infections, such as certain - childhood illnesses (measles, rubella, mumps), influenza (flu)

- Bacterial infections such as inflammation of the renal pelvis, bladder, tonsils and middle ear

  • Autoimmune diseases

- Chronic inflammatory bowel disease (Crohn’s disease)

- Osteoarthritis (rheumatoid arthritis)

  • Cancer (tumours, leukaemia)


Additional information

Do you want to know more about fever and its treatment? You can find detailed information on this topic on our website

Patients have been relying on the gentle power of ben-u-ron® to treat fever and pain since 1959 with little side effects. Available in different dosages and dosage forms and suitable for all age groups.