Absence of thirst is a lack of the urge to drink fluids, even when the body is low on water or has an excess amount of salt.
Adipsia; Lack of thirst; Absence of thirst
Not being thirsty at times during the day is normal, if the body does not need fluid replacement. But if you have a sudden change in the need for fluids, you should visit your health care provider right away.
As people age, they are less likely to notice their thirst and may not drink fluids when needed.
Absence of thirst may be due to:
Birth defects of the brain
Bronchial tumor that causes syndrome of inappropriate antidiuretic hormone secretion (SIADH)
Injury or tumor of part of the brain called the hypothalamus
The physical examination may include a detailed nervous system examination if the health care provider suspects a head injury or problem with the hypothalamus. Diagnostic tests will vary depending on the history and physical examination findings.
Based on your evaluation and any tests, your health care provider will recommend treatment if needed.
If you are dehydrated, fluids will likely be given through a vein (IV).
Skorecki K, Ausiello D. Disorders of sodium and water homeostasis. In: Goldman L, Schafer AI, eds. Goldman’s Cecil Medicine. 24th ed. Philadelphia, PA: Elsevier Saunders; 2011:chap 118.
Linda J. Vorvick, MD, Medical Director and Director of Didactic Curriculum, MEDEX Northwest Division of Physician Assistant Studies, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.