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Start free with EleplanHereditary benign intraepithelial dyskeratosis
ORPHA:352657Disease
Also called HBID · Hereditary benign corneal intraepithelial dyskeratosis
What it is
A rare, genetic, superficial corneal dystrophy disease characterized by white, elevated, epithelial plaques located on the bulbar conjunctiva (sometimes with encroachment of the cornea) and oral mucosa (in any part of the oral cavity), associated with dilated, hyperemic, conjunctival blood vessels, observed mainly in Haliwa-Saponi Native American descendents. Patients may be asymptomatic or present with ocular itching, superficial corneal scarring, excessive lacrimation, photophobia and visual loss due to corneal opacity. Histologically, both ocular and oral lesions display acanthosis with hyperkeratosis and prominent dyskeratosis.
Key facts
- Prevalence
- <1 / 1 000 000 (Europe)
- Age of onset
- Infancy, Neonatal
- Inheritance
- Autosomal dominant
- 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.
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.
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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