Objective: Dermatomyositis (DM) symptoms negatively affect the quality of life of individuals living with the disease. Disease-specific, patient-reported outcome (PRO) instruments are needed to assess symptoms important to individuals with DM. This study aimed to conceptualize patient DM experience and disease activity definition to refine the development of the Dermatomyositis Disease Symptom Questionnaire (DM-DSQ), a novel PRO instrument capturing patient-reported symptoms.
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