Definition of Thirst - absent:

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.

Considerations:

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.

Common Causes:

As people age, they are less likely to notice their thirst and may not drink fluids when needed.

Causes of abscence of thirst may be due to:

• Birth defects of the brain
• Bronchial tumor that causes SIADH
• Hydrocephalus
• Injury or tumor of part of the brain called the hypothalamus
• Stroke

Home Care:

Follow your health care provider's recommendations.

Call your health care provider if:

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

What to expect at your health care provider's office:

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).