The current models for stigma measurement are disease-specific and created for use with adults, despite the fact that stigma may be experienced also by adolescents and may be layered, and not simply the result of one disease. Stigma in adolescents may effect their life outcome, as many emotional and social changes are happening at this point in life, therefore developing a measure to address stigma in youth is important. Focus groups of youth will be chosen based on sexual orientation, ethnic minority, street involvement, visible physical disability and history of sexual exploitation, with an eye to ensuring the sample contains individuals experiencing layered stigma. The result of research will be an adolescent- specific measure of perceived stigma, enacted stigma and internalized stigma that can be used to understand how stigma effects the perceptions, risk-behaviours and futures of youth, and to develop stigma reduction strategies.