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Living with Autosomal dominant pseudohypoaldosteronism type 1

An inherited condition in which the body loses too much salt in the urine.

Understanding Autosomal dominant pseudohypoaldosteronism type 1

Autosomal dominant pseudohypoaldosteronism type 1 is an inherited condition that affects salt balance because too much salt is lost in the urine.

This is a disorder of electrolyte (body salt) balance. It can cause poor weight gain (failure to thrive) and dehydration. Symptoms usually begin in the newborn period. Some adults have high aldosterone levels (a hormone) but no history of illness.

Signs & symptoms

GARD describes these main features:

  • Too much salt lost in the urine
  • Poor weight gain (failure to thrive)
  • Dehydration

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 kidney specialists.

  3. Consider genetic testing

    Changes in NR3C2 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
Genetic specialists (geneticists); Kidney specialists (nephrologists)
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 National Kidney Foundation and other patient organizations
  • 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
Can genetic testing for the NR3C2 gene confirm the diagnosis?
How can we tell if my child is becoming dehydrated?
Which specialists should manage salt balance?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant
GenesNR3C2

It is caused by changes in the NR3C2 gene (the mineralocorticoid receptor gene). It is autosomal dominant with variable expression, so features can differ between people.

GeneticKidney

Also known as: autosomal dominant pha 1; autosomal dominant pha1; pha i, autosomal dominant; pha1a; pseudohypoaldosteronism type 1, dominant; pseudohypoaldosteronism type i, autosomal dominant

Patient organizations

Source: NIH GARD · Autosomal dominant pseudohypoaldosteronism type 1GARD ID 9145 · 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 Autosomal dominant pseudohypoaldosteronism type 1.

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