According to an article published in La Revue du Praticien, an intermittent fever is typically caused by a focal infection where the bacteria are localized in a specific area. The fever can result from infections localized in the urinary ducts, tonsils or the colon or develop from tuberculosis or malaria.
Patient.co.uk makes the distinction between a common fever and an intermittent fever. A remitting fever, which is the most common type, is exhibited by fluctuating daily temperatures above the normal temperature range of 98.6 degrees Fahrenheit or 37 degrees Celsius. An intermittent fever is denoted by a daily temperature that hovers in the normal range and elevates from time to time. If there is a wide variance in temperature, which also causes sweating and chills, the fever is referred to as "hectic."