The natural history of childhood eczema: observations from the British 1958 birth cohort study
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Published on: August 7, 2017
1Department of Dermatology, Queen's Medical Centre, Nottingham NG7 2UH, U.K.hywel.williams@nottingham.ac.uk
Insights
This study on childhood atopic eczema found that while many cases appear to clear by adolescence, long-term prognosis may be worse due to recurrences. Early onset by age 7 is common, but long-term outcomes require careful consideration.
Area of Science:
- Pediatric Dermatology
- Epidemiology
- Longitudinal Cohort Studies
Background:
- Atopic eczema is a common childhood condition.
- Understanding its natural history, including onset and clearance, is crucial for effective management.
- Longitudinal data are essential for tracking disease progression and long-term outcomes.
Purpose of the Study:
- To analyze the age of onset and clearance rates of atopic eczema in a large birth cohort.
- To investigate the long-term prognosis of childhood eczema, considering recurrences.
- To compare community-ascertained eczema onset with hospital-based study findings.
Main Methods:
- Analysis of linked data from the National Child Development Study (NCDS) for 6877 children born in March 1958.
- Data collected at birth and at ages 7, 11, 16, and 23 years.
- Examination of onset, clearance, and recurrence of atopic eczema.
Main Results:
- 66% of eczema cases by age 16 had onset by age 7.
- Short-term clearance rates at ages 11 and 16 were 65% and 74%, respectively.
- Long-term clearance rates, accounting for recurrences, were lower (53% and 65% at ages 11 and 16).
Conclusions:
- Community-ascertained atopic eczema may have a later onset than suggested by hospital-based studies.
- The long-term prognosis of childhood eczema may be poorer than previously thought, especially when recurrences are considered.
- Longitudinal studies like NCDS are vital for understanding the true natural history of common childhood diseases.
Abstract:
The National Child Development Study (NCDS) is a birth cohort study whose longitudinal design makes it suitable for examining the natural history of common diseases in childhood such as atopic eczema. We have analysed the age of onset and clearance rates for examined and/or reported eczema in 6877 children born during the period 3-9 March 1958 for whom linked data were available at birth and at the ages of 7, 11, 16 and 23 years. Of the 870 cases with examined or reported eczema by the age of 16 years, 66% had age of onset by the age of 7 years. Of the 571 children with reported or examined eczema by the age of 7 years, the proportion of children who were clear in terms of examined eczema or reported eczema in the last year at ages 11 and 16 years was 65% and 74%, respectively. These 'apparent' or short-term clearance rates fell to 53% and 65%, respectively, after allowance for subsequent recurrences in adolescence and early adulthood. Age of onset of community-ascertained cases of atopic eczema may be later than that reported in hospital-based studies. The long-term prognosis of childhood eczema may be worse than some previous studies have suggested, especially when subsequent recurrences are taken into account.
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