Type of fever in which the highest temperature is recorded in the morning and the lowest in the evening:

RUHS, Jaipur, PB B.Sc Nursing Entrance-2020

Nursing Foundation

Easy

Appeared in: RUHS, Jaipur, PB B.Sc Nursing Entrance-2020

Explanation

The body's temperature naturally follows a circadian rhythm, typically being lowest in the early morning and highest in the late afternoon or early evening.
Inverse fever is defined by a complete reversal of this normal pattern.
In this type of fever, the peak temperature occurs in the morning, and the lowest temperature (trough) occurs in the evening.
This specific pattern, while uncommon, can be a diagnostic clue for certain diseases, such as miliary tuberculosis.

Option A: Intermittent fever is characterized by temperature spikes that return to normal at least once within a 24-hour period. It does not describe a reversed circadian rhythm.
Option C: Spike fever (or hectic fever) refers to a pattern with wide temperature fluctuations, where the temperature rapidly rises to a high peak and then falls quickly, often to normal or subnormal levels. It doesn't specifically relate to the time of day.
Option D: Hay fever is not a type of fever pattern related to the body's thermoregulation. It is the common name for allergic rhinitis, an allergic reaction to environmental allergens like pollen.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Classification of fever patterns based on circadian rhythm as background academic context rather than a clinical decision trigger.
Accurate charting of temperature patterns is a vital nursing responsibility. It can provide crucial diagnostic clues to the underlying cause of an illness.
Recognizing an inverse fever pattern should prompt the nurse to report this finding, as it is associated with specific conditions like disseminated tuberculosis, which requires prompt diagnosis and treatment.
What if the temperature remained consistently above normal with very little fluctuation (less than 0.5°C) throughout the day? This would be classified as a 'Sustained or Continuous' fever, often seen in conditions like lobar pneumonia or typhoid fever.

How to Approach the Question

First, identify the key descriptors in the question: 'highest temperature in the morning' and 'lowest in the evening'.
Recall the normal circadian rhythm of body temperature, which is the opposite: lowest in the morning and highest in the evening.
Recognize that the pattern described is a reversal, or 'inversion,' of the normal biological rhythm.
Scan the options for a term that means 'reversed.' 'Inverse fever' is the most logical fit.
Eliminate the other options by recalling their definitions: 'Intermittent' means the fever comes and goes, 'Spike' refers to rapid changes, and 'Hay fever' is an allergy, not a true fever.

Concept Tested & Keywords

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E6 Nelson Textbook of Pediatrics(2024) — Volume 1 pp. 1642-1644, 1643-1645

E6 Nursing Fundamentals Taylor p. 118-120