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Start free with EleplanClassic congenital adrenal hyperplasia due to 21-hydroxylase deficiency, simple virilizing form
ORPHA:315311Clinical subtype
Also called Classic 21-OHD CAH, simple virilizing form
What it is
A form of classical congenital adrenal hyperplasia due to 21-hydroxylase deficiency characterized by abnormal genital development with variable levels of virilization in females, and normal genitalia in males in association with glucocorticoid insufficiency with absence of salt-wasting, accelerated growth velocity and bone maturation, premature adrenarche and precocious puberty leading to reduced adult height. Females have a normal uterus and various degrees of abnormal vaginal development.
Key facts
- Prevalence
- 1-9 / 100 000 (Europe)
- Age of onset
- Infancy, Neonatal
- Inheritance
- Autosomal recessive
- Classified as
- Clinical subtype
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
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
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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