Alternate Names: Adipsia; Lack of thirst; Absence of thirst

Considerations: The absence of thirst at various times during the day is normal, if the body is not requiring fluid replacement. However, when the body needs fluid replacement and there is still a lack of thirst then see your health care provider right away.

Common Causes:

• hypothalamic injury or tumor (the hypothalamus is a small area in the brain; it secretes hormones that control many of the internal body processes including thirst)
• head injury
• bronchial tumor (SIADH conditions)
• cirrhosis

Home Care: Follow your health care provider’s recommendations. Drink adequate amounts of fluids, even if you do not feel thirsty (6 to 8 glasses per day may be advised).

Call If:

• there is any abnormal absence of thirst.

What To Expect: The medical history will be obtained and a physical examination performed.

Medical history questions documenting the absence of thirst in detail may include:

• time pattern:
  • When was symptom noticed?
  • Did the absence of thirst develop suddenly or slowly?
• quality:
  • Is the thirst decreased or totally absent?
  • Is drinking fluids possible?
  • Did the loss of a thirst sensation follow a known head injury?
• other
  • What other symptoms are also present?
  • Is there abdominal pain?
  • Are there headaches?
  • Is there difficulty swallowing?
  • Is there an aversion to drinking fluids?
  • Is there difficulty breathing?
  • Is there a cough?
  • Are there changes in the appetite?
  • Is there a decrease in the amount of urine produced?
  • Are there changes in skin color?
  • What medications are being taken?