Development and validation of the Oral Lichen Planus-Disease Activity Scale: a novel tool for comprehensive clinical assessment.

Objective: To develop and validate the Oral Lichen Planus-Disease Activity Scale (OLP-DAS) for assessing overall disease activity of OLP.

Methods: The OLP-DAS was created by refining the Thongprasom criteria, incorporating inputs from the literature and expert review, and integrating pain assessment. Content validity was evaluated in a virtual meeting with 8 Oral Medicine specialists.