The purpose of this research study was to explore personal illness mod
els of preadolescents and adolescents regarding diabetes mellitus. Per
sonal illness models were defined as the adolescents' cognitive repres
entations of their disease. Sixty children ages 10 to 17 years with a
diagnosis of insulin-dependent diabetes mellitus were interviewed usin
g a semistructured questionnaire. Data were content analyzed for commo
n themes. Although most participants expressed an understanding that t
heir disease would last a lifetime, they were hopeful for a cure. Part
icipants wanted healthcare professionals to provide strategies for con
trolling blood glucose to prevent future complications. Family and fri
ends who followed the same diet as the adolescent with diabetes were v
iewed as supportive. The majority of adolescents were responsible for
much of their own disease management. Their greatest fears concerned i
nsulin reactions and long-term complications such as amputation of lim
bs.