From MEpedia, a crowd-sourced encyclopedia of ME and CFS science and history

A fever is a higher than normal body temperature, usually around 98.6F / 36.5C. Most fevers are a sign of the body trying to fight an illness or infection, for example a virus or bacterial infection. A high temperature makes it harder for bacteria or a virus to survive.[1][2]

Prevalence[edit | edit source]

Symptom recognition[edit | edit source]

A low-grade fever is an optional symptom in the Holmes criteria for myalgic encephalomyelitis.[3]
Feelings of feverishness are recognized as a neuroendocrine system symptom in the Canadian Consensus Criteria.

An intermittent fever is a potential symptom of Long COVID in the World Health Organization's definition.[4]

Notable studies[edit | edit source]

Possible causes[edit | edit source]

Most fevers are caused by an infection.

See also[edit | edit source]

Learn more[edit | edit source]

References[edit | edit source]

  1. "Fever: MedlinePlus". Retrieved October 31, 2018.
  2. "Fever | NHS". hereforyouhampshire.nhs.uk. Retrieved October 31, 2018.
  3. "Holmes Definition of Chronic Fatigue Syndrome, U.S. CDC 1988". cfids-me.org. Retrieved October 31, 2018.
  4. Soriano, Joan B.; Allan, Maya; Alsokhn, Carine; Alwan, Nisreen A.; Askie, Lisa; Davis, Hannah E.; Diaz, Janet V.; Dua, Tarun; de Groote, Wouter; Jakob, Robert; Lado, Marta; Marshall, John; Murthy, Srin; Preller, Jacobus; Relan, Pryanka; Schiess, Nicoline; Seahwag, Archana (October 6, 2021), A clinical case definition of post COVID-19 condition by a Delphi consensus, World Health Organization (WHO) clinical case definition working group on post COVID-19 condition, World Health Organization