Prior terminology included juvenile-onset diabetes mellitus or insulin-dependent diabetes mellitus. Although traditionally considered a disease of children and adolescents, type-1 diabetes resulting from autoimmune cell destruction can occur at any age. In fact, in some reports, more than one-third of individuals developed type-1 diabetes after adolescence. Individuals with type-1 diabetes and their families have an increased prevalence of autoimmune thyroid diseases such as autoimmune adrenal insufficiency (Addison’s disease), autoimmune thyroid disease (Graves’ and Hashimoto’s disease), pernicious anaemia and vitiligo. Type-1 diabetes requires continuous exogeneous insulin replacement therapy in addition to diet and active management to control blood glucose. It accounts for 5-10% of all diabetes globally. As a result of having diabetes for a longer duration compared to type-2 diabetic patients, these patients carry the risk of more serious