Sibel Health is a medical device company that has developed a wearable, wireless scratch sensor to automatically detect scratching using AI/ML algorithms. The technology was accepted to the FDA’s drug development tool (DDT) program and is currently undergoing qualification to act as an endpoint in clinical studies determining the efficacy of therapeutics for atopic dermatitis. DiMe organized a Critical Path Innovation Meeting between pharmaceutical companies, patient advocacy groups, dermatologists, members of the FDA, and digital health technology manufacturers like Sibel to discuss the digital measurement of nocturnal scratch. Having a shared terminology and ontology for nocturnal scratch facilitated conversation between Sibel, the FDA, pharmaceutical companies, and other stakeholders by ensuring that everyone had the same baseline understanding of the concept. Interviews conducted by DiMe with both pediatric and adult atopic dermatitis patients and their family members established the clinical meaningfulness of nocturnal scratch to patients. Inputs from these interviews were critical in determining the outcome measure that would be most valuable to patients in drug development.