Pseudohypoaldosteronism type 2
Dernière mise à jour 18 Aug 2020
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Pseudohypoaldosteronism type 2 (PHA2) is caused by problems that affect regulation of the amount of sodium and potassium in the body. Sodium and potassium are important in the control of blood pressure, and their regulation occurs primarily in the kidneys.
Description
Pseudohypoaldosteronism type 2 (PHA2) is caused by problems that affect regulation of the amount of sodium and potassium in the body. Sodium and potassium are important in the control of blood pressure, and their regulation occurs primarily in the kidneys.
People with PHA2 have high blood pressure (hypertension) and high levels of potassium in their blood (hyperkalemia) despite having normal kidney function. The age of onset of PHA2 is variable and difficult to pinpoint; some affected individuals are diagnosed in infancy or childhood, and others are diagnosed in adulthood. Hyperkalemia usually occurs first, and hypertension develops later in life. Affected individuals also have high levels of chloride (hyperchloremia) and acid (metabolic acidosis) in their blood (together, referred to as hyperchloremic metabolic acidosis). People with hyperkalemia, hyperchloremia, and metabolic acidosis can have nonspecific symptoms like nausea, vomiting, extreme tiredness (fatigue), and muscle weakness. People with PHA2 may also have high levels of calcium in their urine (hypercalciuria).
Inheritance patterns
The source lists the following possible inheritance patterns: Autosomal dominant; Autosomal recessive. More than one pattern can apply in different cases.
Related genes
Other names
Familial hyperkalemic hypertension
Familial hyperpotassemia and hypertension
Familial hypertensive hyperkalemia
FHHt
Gordon hyperkalemia-hypertension syndrome
Gordon's syndrome
PHAII
Pseudohypoaldosteronism type II
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Lectures complémentaires et références
- Pseudohypoaldosteronism type 2; MedlinePlus, National Library of Medicine.
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