Health Information

Absence of thirst is a lack of the urge to drink fluids.

Adipsia; Lack of thirst; Absence of thirst

Not being thirsty at various times during the day is normal, if the body does not need fluid replacement. However, a quick change in the need for fluids should prompt a visit to your doctor.

• Bronchial tumor that causes SIADH
• Cirrhosis
• Head injury
• Hypothalamic injury or tumor
• Stroke

Follow your health care provider's recommendations. Drink enough fluids, even if you do not feel thirsty (6 - 8 glasses each day may be advised).

Call for an appointment with your health care provider if you notice any abnormal lack of thirst.

The health care provider will take a medical history and perform a physical examination.

Medical history questions may include the following:

• When did you first notice this problem?
• Did the absence of thirst develop suddenly or slowly?
• Is the thirst decreased or totally absent?
• Can you drink fluids?
• Did the loss of thirst follow a head injury?
• What other symptoms do you have?
• Do you have abdominal pain?
• Do you have headaches?
• Do you have difficulty swallowing?
• Do you suddenly dislike drinking fluids?
• Do you have difficulty breathing?
• Do you have a cough?
• Do you have any changes in appetite?
• Do you urinate less than usual?
• Do you have any changes in skin color?
• What medications are you taking?

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.

Necessary fluids may be given through a vein (IV).

Robinson AG, Verbalis JG. Posterior pituitary. In: Kronenberg HM, Shlomo M, Polonsky KS, Larsen PR, eds. Williams Textbook of Endocrinology. 11th ed. Philadelphia, Pa: Saunders Elsevier;2008:chap 9.

Oh MS. Evaluation of renal function, water, electrolytes and acid-base balance. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 21st ed. Philadelphia, Pa: Saunders Elsevier;2006:chap 14.