This document discusses diabetes mellitus (DM). It defines DM and describes the three main types: type 1 DM, type 2 DM, and gestational DM. It lists the signs and symptoms of DM and risk factors. It also outlines complications of DM and the process for diagnosis and assessment of diabetic clients. Finally, it details the clinical, public health, and managerial roles of community health officers in managing DM at the healthcare level.