Polydipsia is possible to rule out psychogenic polydipsia or habit polydipsia. Polydipsia is a symptom (evidence of a disease state), not a disease in itself. As it is often accompanied by polyuria, investigations directed at diagnosing diabetes insipidus and diabetes mellitus can be useful. Blood serum tests can also provide useful information about the osmolality of the body's extracellular fluids. A decrease in osmolality caused by excess water intake will decrease the serum concentration of red blood cells, blood urea nitrogen (BUN), and sodium. Polydipsia Polydipsia is excessive thirst or excess drinking. The word derives from the Greek () "very thirsty",
Medical centers in the United States Kingdom. The Texas Medical Center is the largest medical center in the world with one of the highest densities of clinical facilities for patient care, basic science, and translational research. Located in Houston, the center contains 50 medicine-related institutions, including 21 hospitals and two specialty institutions, two medical schools, six nursing schools, and schools of dentistry, public health, pharmacy, and other health-related practices. All 50 institutions are not-for-profit and constitute some of the most highly regarded institutions in the country, including: M.D. Anderson Cancer Center, Texas Children's Hospital, The Texas Heart Institute, The Methodist Hospital and Baylor College of Medicine.