A Study to Assess the Reliability/Feasibility of Using Emerald Touchless Sensor for Scratching and Sleep Quantification in a Subset of Participants From PEDISTAD Study (OBS15333; NCT03687359)

Inclusion Criteria

• •Participation in OBS15333 pediatric AD registry (PEDISTAD) in the United States (US) study sites.
• •Enrolled in PEDISTAD, age more than or equal to 6 years to less than 12 years at the time of enrollment.
• •Peak pruritus Numeric Rating Scale (NRS) last night more than or equal to 4 at screening.
• •Participant must have home access to reliable and operational Wi-Fi and broadband internet at screening and throughout the study period.
• •Participants/parents must have a device (mobile phone, tablet or computer) to record daily itch and sleep disturbance at screening and throughout the study period.
• •Participant agrees to sleep by himself/herself (ie, with no other individuals or pets) in the monitored bedroom for the duration of the study (if not all times, at least 5 days a week for a minimum of 5 hours/night for a total of 16 weeks).
• •Signed informed consent by the parent/legally acceptable representative and assent by the participant appropriate to the participant's age.