Final answer:
Polyuria is the medical term for excessive urine production, commonly associated with both diabetes insipidus and diabetes mellitus.
Step-by-step explanation:
The excessive urine production that is a characteristic symptom of all forms of diabetes is known as Polyuria. Polyuria is the production of urine in excess of 2.5 L/day. This condition can be caused by diabetes insipidus, diabetes mellitus, or the excessive use of diuretics. In diabetes mellitus, excessive blood glucose leads to glucose in urine which draws more water into the urine, increasing urine volume. In contrast, diabetes insipidus is marked by a deficiency of antidiuretic hormone (ADH) which impairs water reabsorption in the kidneys, also leading to increased urine volume.