High blood calcium levels have been reported to cause increased urination, perhaps through its ability to interfere with the action of antidiuretic hormone (ADH, AVP, vasopressin) released by your pet's pituitary gland. (2ndchance.info)
I've recently been suffering from drug induced oedema but can not take NHS diuretic medicines due to SIADH (syndrome of inappropriate antidiuretic hormone). (healthwholeness.com)
Arginine vasopressin (AVP), also known as argipressin or antidiuretic hormone (ADH), is a human hormone that is mainly released when the body is low on water; it causes the kidneys to conserve water by concentrating the urine. (sciencedaily.com)