Abstract
While increasing the prevalence of diabetes mellitus and its complications, with its negative effect on personal and public health, the intensive glycemic control becomes more desirable. Sleep disturbance could be one of causes that impair glycemic control. A cross sectional study aimed to measure the prevalence of sleep disturbance and its impact on glycemic control among type 2 diabetic patients attending the diabetic center in Prince Mansour Military Hospital in Taif was done. The target populations composed of 360 patients diagnosed with type 2 diabetes mellitus. An Arabic version of the Pittsburgh sleep quality index (PSQI), a valid and reliable self-administered questionnaire was distributed to the participants to evaluate their quality of sleep. This study highlighted the incidence of poor sleeping quality among patient s with uncontrolled DM with a statistical significant correlation between sleeping quality and presence of DM complication and BMI.