MASI (Melasma Area and Severity Index)

MASI is a clinical tool for assessing the extent and severity of melasma (Ref: Pandya AG, Hynan LS, Bhore R, Riley FC, Guevara IL, Grimes P, et al. Reliability assessment and validation of the Melasma Area and Severity Index (MASI) and a new modified MASI scoring method. J Am Acad Dermatol. 2011;64:78-83,83.e1-2.)

Calculators for other skin disorders: