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[Atopic dermatitis on infant physical examination]
H Kawaguchi1, M Takeuchi, Y Tanaka
1Department of Dermatology, Yokohama City University, School of Medicine.
Insights
A study found that 20.3% of 4-month-old infants have atopic dermatitis, with most cases being mild. Familial history of atopic dermatitis was linked to infant cases, but not asthma or rhinitis.
Area of Science:
- Pediatrics
- Dermatology
- Epidemiology
Context:
- Infant health checks are crucial for early detection of skin conditions.
- Atopic dermatitis (AD) is a common chronic inflammatory skin disease.
- Understanding prevalence and risk factors in infants is essential for public health.
Purpose:
- To determine the prevalence of atopic dermatitis in 4-month-old infants.
- To identify potential correlations between infant atopic dermatitis and familial history.
- To describe the clinical presentation and seasonal variations of infant atopic dermatitis.
Summary:
- A study examined 739 infants at 4 months old, diagnosing 150 with atopic dermatitis, yielding a prevalence of 20.3%.
- Most cases were mild, primarily affecting the head, face, and trunk.
- A positive correlation was found between infant atopic dermatitis and a familial history of the condition, but not with familial asthma or allergic rhinitis.
Impact:
- Highlights the significant prevalence of mild atopic dermatitis in early infancy.
- Emphasizes the importance of dermatological diagnosis for differentiating infant atopic dermatitis.
- Suggests familial history of atopic dermatitis as a key risk factor, guiding future research and clinical practice.
Abstract:
The prevalence rate of atopic dermatitis was investigated in 4-month-old infants, who were examined by dermatologists at regular health checks at a health center. Among 739 infants examined, 150 were diagnosed as having atopic dermatitis, giving a prevalence rate of 20.3%. Most of the cases were mild, and no severe cases were observed. The prevalence rate in spring and autumn was significantly higher than that in summer and winter. The eruptions were seen mainly on the head, face, and trunk. A familial history of atopic dermatitis was positively correlated with infant atopic dermatitis in this series, whereas a familial history of bronchial asthma and allergic rhinitis showed no such correlation. It is important to make a correct diagnosis of mild atopic dermatitis by differentiation from other diseases by dermatologists, and it will be of interest to observe the condition of the infants when they attend for their next physical examination at the age of 18 months.