DIET & NUTRITION 
PATIENT EDUCATION 
OBESITY/WEIGHT MANAGEMENT 
EXERCISE/TRAINING 
LEGAL MATTERS 
GUIDELINES/RECOMMENDATIONS ⚠️ Small Study / Early Comparative Evidence
Wearable-derived nocturnal scratching metrics showed moderate correlations with EASI severity and serum TARC in 50 pediatric patients with atopic dermatitis. Declines paralleled clinical improvement during topical therapy initiation.
Clinical Considerations
- Baseline correlations between scratching metrics and EASI ranged from 0.60 to 0.64, weakening to 0.43 to 0.47 post-treatment.
- Scratch burden index distinguished clinically meaningful responders with AUC of 0.78, sensitivity 75%, specificity 79%.
- Numerical rating scale itch scores showed no meaningful correlation with EASI or TARC, suggesting subjective itch and scratching behavior capture different dimensions.
- Findings remain exploratory and not externally validated; pediatric-specific algorithm validation is limited.
Practice Applications
- Recognize wearable scratching metrics as an emerging area of investigation, not a validated clinical tool.
- Interpret patient-reported itch and observed scratching as related but non-interchangeable signals.
- Avoid substituting wearable data for established severity measures such as EASI or POEM.
- Monitor further prospective validation before integrating wearable-derived metrics into pediatric AD assessment.
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