Steroid dehydrogenase deficiency-dental…

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Steroid dehydrogenase deficiency-dental anomalies syndrome

ORPHA:3196Disease

Also called Lyngstadaas syndrome

What it is

A rare metabolic liver disease characterized by progressive liver disease and early cirrhosis due to accumulation of toxic cholesterol metabolites, which are detectable in bile, plasma, and urine, in association with dental abnormalities such as general hypomineralization and enamel hypoplasia, as well as occurrence of supernumerary teeth. There have been no further descriptions in the literature since 1996.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Childhood
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.

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.

ICD-10 codes

K76.8filed under a broader ICD-10 category — shared with 19 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.

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

GARD 5015MESH C537490MONDO 0017904UMLS C2931508

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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