Diabetes is also known as in sulin-dependent diabetes mellitus (IDDM) or juvenile-onset diabetes. It occurs because the in sulin-producing cells of the pancreas (beta cells) are damaged. As a result the pancreas makes little or no in sulin, so sugar cannot get into the body's cells for use as energy. Symptoms usually develop over a short period of time and include increased thirst, frequent urination, constant hunger, weight loss, and extreme fatigue. Children with Diabetes must use in sulin injections to control their blood glucose.