Assessing stigma in low- and middle-income countries: A systematic review of scales used with children and adolescents

•This review synthesizes scales across stigmas in low- and middle-income countries.•Scales used with children measure few stigma facets, contrary to existing frameworks.•Scales are often adapted for age, cross-cultural adaptation is more limited.•Few stigma scales are used across stigmas and contexts, with promising exceptions.•We recommend a generic stigma scale set with cross-cultural adaptation guidance.