Fever - Symptoms causes - Mayo Clinic A fever is a temporary rise in body temperature It's one part of an overall response from the body's immune system A fever is usually caused by an infection For most children and adults, a fever may be uncomfortable But it usually isn't a cause for concern For infants, however, even a low fever may mean there's a serious infection Fevers generally go away within a few days A number of
Fever: Causes, Symptoms, and Treatment - WebMD Fever in children: When to worry You should reach out to your pediatrician if your child 6 months to 2 years: Has a fever higher than 102 F for more than 1 day Has other symptoms, such as a cough
Fever in adults: When to worry - Harvard Health Fever in adults: When to worry Infection is a common cause of fever, but other conditions can also bring the heat Fever is one of the body's most effective ways of fighting infection It is part of your body's defense against infection-causing germs
Fever - Wikipedia Fever or pyrexia in humans is a symptom of an anti-infection defense mechanism that appears with body temperature exceeding the normal range caused by an increase in the body's temperature set point in the hypothalamus [5][6][7][12] There is no single agreed-upon upper limit for normal temperature: sources use values ranging between 37 2 and 38 3 °C (99 0 and 100 9 °F) in humans [1][7][8
High temperature (fever) in adults - NHS Find out about high temperature (fever) in adults including what causes it, how to tell if you have a high temperature and how to treat it