The Visualization of Nocturnal Scratching Behavior in Pediatric Atopic Dermatitis: Facilitating Shared Decision-Making and Assessing the Efficacy of Treatment.

Itching is a subjective symptom that is especially difficult to assess in pediatric atopic dermatitis (AD) patients with chronic pruritus since early infancy. This study aimed to assess the utility of the Itch Tracker (Maruho Co. Ltd., Osaka, Japan), a smartwatch application, in visualizing nocturnal scratching and facilitating shared decision-making (SDM) in two pediatric AD cases treated with nemolizumab. Objective monitoring revealed discrepancies between self-reported itch and actual scratching behavior, leading to appropriate treatment initiation and significant improvements in scratching behavior, Eczema Area and Severity Index (EASI), and numerical rating scale (NRS) scores. These results highlight the clinical value of behavioral visualization in enhancing SDM and optimizing management in pediatric AD.