Background: Information on complications of diabetes in sub-Saharan Africa is scarce despite the incidence has gone hand in hand with the growing disease prevalence. Researches from this area of the country focus on type 2 DM which makes the available data regarding type 1 DM lacking. The research will indicate the prevalence of complication and the presence of other comorbidities among type 1 DM patients in Felege Hiwot Specialized Comprehensive Hospital