Hyperandrogenism

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Hyperandrogenism due to cortisone reductase deficiency

ORPHA:168588Malformation syndrome

Also called 11-beta-hydroxysteroid dehydrogenase deficiency type 1

What it is

A rare, genetic, endocrine disease characterized by defect in conversion of cortisone to active cortisol, resulting in ACTH-mediated excessive androgen release from adrenal glands. Premature adrenarche is typical with precocious pseudopuberty, proportionate tall stature and accelerated bone maturation in males, and hirsutism, oligoamenorrhea, central obesity and infertility in females. Imaging studies may indicate adrenal hyperplasia.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Antenatal, Infancy, Neonatal
Inheritance
Autosomal dominant, Autosomal recessive
Classified as
Malformation syndrome

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.

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

Genes

H6PDDisease-causing germline mutation(s) (loss of function)
HSD11B1Disease-causing germline mutation(s) (loss of function)

ICD-10 codes

E25.0filed under a broader ICD-10 category — shared with 12 other rare diseases

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Cross-references

GARD 9882MONDO 0000193OMIM 604931OMIM 614662UMLS C4329210

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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