In France, the adult population living with diabetes in 2016 is estimated at more than 3.3 million patients treated. Type 1 diabetes (T1DM) represents 5.6% of diabetic patients (approximately 185,000 patients). Numerous studies show that patients fear hypoglycemia, with an impact on their quality of life, sleep disorders and depressive symptoms. In addition, there is a metabolic impact with a problem of therapeutic compliance and an alteration of glycemic control. This study examine the relation between Post Traumatic Stress disorder (PTSD) and diabetes diagnosis or severe hypoglycaemia in adults with Type 1 Diabetes. The aim of this study is to evaluate the prevalence of PTSD in this population.