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Living with Steroid dehydrogenase deficiency-dental anomalies syndrome

A rare liver condition with worsening liver disease in childhood and changes in the teeth.

Understanding Steroid dehydrogenase deficiency-dental anomalies syndrome

Steroid dehydrogenase deficiency-dental anomalies syndrome is a rare metabolic liver condition that also affects the teeth.

Liver disease gets worse over time, with early scarring (cirrhosis) caused by a buildup of toxic cholesterol by-products. These can be found in bile, blood, and urine. Teeth may be weakly formed, with thin enamel and extra teeth. GARD notes no further descriptions in the literature since 1996.

Signs & symptoms

Symptoms vary from person to person. GARD lists these:

  • Worsening liver disease
  • Liver scarring (cirrhosis)
  • Thin tooth enamel
  • Weak or underformed teeth
  • Extra teeth

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include digestive system specialists, genetic specialists and gum, teeth and mouth specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Digestive system specialists (gastroenterologists); Genetic specialists (geneticists); Gum, teeth and mouth specialists (odontologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with rare disease patient organizations for support
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
How should my child's liver be monitored?
What dental care do my child's teeth need?
Is genetic testing available for our family?

Quick facts

Symptoms usually startChild
InheritanceAutosomal Recessive

Changes in genes (variants) cause this condition. It is autosomal recessive, meaning a child inherits a changed copy of a gene from each parent. GARD doesn't list which gene.

GeneticGastrointestinal

Also known as: lyngstadaas syndrome; steroid dehydrogenase deficiency and dental anomaly syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Steroid dehydrogenase deficiency-dental anomalies syndromeGARD ID 5015 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Steroid dehydrogenase deficiency-dental anomalies syndrome.

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