INS and Atypical behavior: Therefore, this study aims to: (1) assess the prevalence of DEBs (including frequency of insulin misuse, IM) in a large Italian pediatric population; (2) explore potential demographic (gender, age, socioeconomic status [SES]), clinical quality of metabolic control, diabetes duration, type of insulin therapy, carb counting) and psychological differences (emotional and behavioral problems) among adolescents with and without DEBs, with and without IM.