Final answer:
Central diabetes insipidus is caused by a tumor on the pituitary gland, which affects the release of ADH.
Step-by-step explanation:
Central diabetes insipidus is caused by a tumor on the pituitary gland. This tumor can interfere with the production or release of antidiuretic hormone (ADH), also known as vasopressin, which is responsible for regulating the body's fluid balance. When the pituitary gland is affected by a tumor, it can result in a decreased release of ADH, leading to the symptoms of central diabetes insipidus.
Learn more about Causes of central diabetes insipidus