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Living with Familial hypoaldosteronism

A rare inherited condition with low aldosterone that can cause salt and fluid imbalance, especially in infants.

Understanding Familial hypoaldosteronism

Familial hypoaldosteronism is a rare genetic condition in which the body does not make enough aldosterone.

In infancy, it can cause a salt and fluid imbalance with poor weight gain, repeated vomiting, and severe dehydration. Fever, diarrhea, sleepiness, and poor feeding since birth may also occur. Older people with the late-onset form are less affected or have no symptoms.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Poor weight gain (failure to thrive)
  • Repeated vomiting
  • Dehydration and low blood volume
  • Low blood pressure
  • Sleepiness (lethargy)
  • Feeding difficulties

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include genetic specialists and hormone specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Genetic specialists (geneticists); Hormone specialists (endocrinologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with rare disease patient organizations for support
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Which tests confirm low aldosterone?
What treatment and salt balance plan do you recommend?
Can genetic testing help confirm this diagnosis?

Quick facts

Symptoms usually starta variety of ages
InheritanceAutosomal Recessive

Changes in genes cause this condition. It is autosomal recessive, which means a child inherits a changed copy of the gene from each parent. GARD does not name the gene.

GeneticEndocrine

Also known as: familial aldosterone deficiency

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Familial hypoaldosteronismGARD ID 16532 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Familial hypoaldosteronism.

Explore the Familial hypoaldosteronism blog

Explore research for Familial hypoaldosteronism

Explore actively recruiting Familial hypoaldosteronism studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Familial hypoaldosteronism with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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