Syndrome of Inappropriate Antidiuretic Hormone Secretion | Diagnosis & Treatment

How is SIADH diagnosed?

In addition to a complete medical history and physical examination, your child’s doctor will order blood tests to measure sodium, potassium chloride levels and osmolality (concentration of solution in the blood).

These tests are necessary to confirm a diagnosis of SIADH.

How is SIADH treated?

The most common treatment for SIADH is fluid restriction of between 30 to 75 percent of normal fluid intake, depending on the severity of your child's disorder. If the condition is chronic, fluid restriction may need to be permanent.

Treatment could also include:

  • certain medications that inhibit the action of ADH (this is rarely used in children because of the side effects)
  • surgical removal of a tumor that is producing ADH