Diabetes mellitus\xa0occurs due to insulin resistance or insulin deficiency and subsequent high blood glucose levels.\xa0Diabetes Insipidus\xa0on the other hand develops as a result\xa0of\xa0the stilted production\xa0of\xa0a hormone\xa0in the\xa0brain, which is released to stop the kidneys producing so much urine\xa0in\xa0order to retain water.\xa0In diabetes\xa0mellitus,\xa0hyperglycemia\xa0is usually caused by low insulin levels (Diabetes\xa0mellitus\xa0type 1) and/or by resistance to insulin at the cellular level (Diabetes\xa0mellitus\xa0type 2), depending on the type and state of the disease.\xa0Hypoglycemia\xa0is\xa0different\xa0from hyperglycemia, which occurs when you have too much sugar in your bloodstream.\xa0Hypoglycemia\xa0can happen in people with\xa0diabetes\xa0if the body produces too much insulin. Insulin is a hormone that breaks down sugar so that you can use it for energy.