Recurrence rate of febrile convulsion related to the degree of pyrexia during the first attack

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A S el-Radhi, K Withana, S Banajeh

    Clinical Pediatrics
    |June 1, 1986
    PubMed

    Insights

    High fever during a child's first febrile convulsion (FC) significantly reduces the likelihood of recurrence. This suggests temperature plays a key role in preventing subsequent FC events.

    Area of Science:

    • Pediatrics
    • Neurology
    • Clinical Medicine

    Background:

    • Febrile convulsions (FC) are common in young children.
    • Recurrence rates of FC vary among individuals.
    • The influence of fever intensity on FC recurrence is not well understood.

    Purpose of the Study:

    • To investigate the relationship between the degree of pyrexia (fever intensity) during the first febrile convulsion and its recurrence rate.
    • To determine if higher fever temperatures are associated with a lower risk of subsequent convulsions.

    Main Methods:

    • A retrospective study of 94 children admitted for their first febrile convulsion between 1980 and 1982.
    • Analysis of the relationship between initial body temperature and the occurrence of subsequent febrile convulsions.
    • Focus on children aged 6-18 months, the peak incidence group for FC.

    Main Results:

    • Children experiencing their first FC with a temperature above 40°C were nearly seven times less likely to have recurrent FC.
    • This protective effect was observed in the peak incidence group (6-18 months of age).
    • Lower initial fever temperatures were associated with a higher risk of recurrence.

    Conclusions:

    • The degree of pyrexia is a significant factor influencing the recurrence rate of febrile convulsions.
    • Higher initial fever may confer a protective effect against subsequent FC.
    • This finding helps explain variations in FC recurrence risk among children.

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