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Start free with EleplanIsolated hyperchlorhidrosis
ORPHA:542657Disease
Also called Carbonic anhydrase XII deficiency
What it is
A rare genetic skin disease characterized by excessive salt wasting in sweat, leading to hyponatremic dehydration, hyperkalemia, and poor feeding and slow weight gain in infancy. Laboratory examination shows hyponatremia, hyperkalemia, increased aldosterone, and increased sweat chloride concentrations.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Infancy
- Inheritance
- Autosomal recessive
- Classified as
- Disease
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Gene
ICD-10 codes
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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