Pediatric lupus is a chronic multisystem rheumatic disease, associated with significant medical and psychosocial implications. Frequent physician visits for routine, urgent or emergent care, limitation of activities, medication side effects, change in body image, fear of the future, and missing school are all disruptive to the patients and parents and impact all spheres of their lives. There is no lupus-specific questionnaire designed to measure the well-being of children with this disease. We developed a brief questionnaire, "Simple Measure of Impact of Lupus Erythematosus in Youngsters© (SMILEY©) with both child and parent versions. We conducted further research about how children/parents feel about having/their children having lupus and used those responses to modify the preliminary SMILEY©. After several iterations, the SMILEY with 26 questions was developed with parallel child- and parent-versions with responses in the form of 5 faces-scale denoting different expressions, in order to ensure easy comprehension across different ages and cultures.