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Diseases

Genetic and Rare Diseases Information Center (GARD)

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Syndrome of inappropriate antidiuretic hormone

*

* Not a rare disease

Other Names for this Disease

  • Dilutional hyponatremia
  • Inappropriate ADH syndrome
  • Schwartz Bartter syndrome
  • SIADH
  • Syndrome of inappropriate antidiuretic hormone secretion
See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.

Symptoms

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What are the symptoms of syndrome of inappropriate antidiuretic hormone?

Symptoms of syndrome of inappropriate antidiuretic hormone include water retention and low sodium level. Low sodium levels may cause lethargy and confusion. Severe low levels of sodium in the body may cause muscle twitching, seizures, stupor, coma, and death.[1]
Last updated: 6/5/2014

The Human Phenotype Ontology provides the following list of signs and symptoms for Syndrome of inappropriate antidiuretic hormone. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms.

Signs and Symptoms Approximate number of patients (when available)
Decreased circulating renin level -
Elevated systolic blood pressure -
Hypernatriuria -
Hyponatremia -
Irritability -
Seizures -
X-linked recessive inheritance -

Last updated: 12/1/2014

The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature.

The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined.

Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common.


References
  1. Lewis JL. Hyponatremia (Low Level of Sodium in the Blood). The Merck Manual Home Health Handbook. July 2013; http://www.merckmanuals.com/home/hormonal_and_metabolic_disorders/electrolyte_balance/hyponatremia_low_level_of_sodium_in_the_blood.html. Accessed 6/5/2014.


Other Names for this Disease
  • Dilutional hyponatremia
  • Inappropriate ADH syndrome
  • Schwartz Bartter syndrome
  • SIADH
  • Syndrome of inappropriate antidiuretic hormone secretion
See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.