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Living with Hereditary gingival fibromatosis

A rare inherited condition in which the gums slowly overgrow, often when teeth come in.

Understanding Hereditary gingival fibromatosis

Hereditary gingival fibromatosis (HGF) is a rare, slowly growing, non-inflammatory overgrowth of the gum tissue.

It affects the gums around the upper and lower teeth. It usually starts when permanent teeth come in, more rarely with baby teeth, or even at birth. The overgrowth can be limited to one area or widespread, and smooth or lumpy, and its severity varies. It can happen alone or as part of a syndrome.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Gum enlargement (gingival overgrowth)
  • Gum overgrowth around the upper teeth
  • Gum overgrowth around the lower teeth
  • Smooth or lumpy gum tissue

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 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
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
Is my gum overgrowth isolated or part of a syndrome?
What dental care can help keep my teeth and gums healthy?
Should other family members be checked?

Quick facts

Symptoms usually startany time in life
InheritanceAutosomal Dominant

GARD says changes in genes (also called variants) cause this condition. When it occurs alone, it is autosomal dominant, so one changed copy of the gene is enough.

Genetic

Also known as: autosomal dominant gingival fibromatosis; autosomal dominant gingival hyperplasia; hereditary fibrous enlargement of gingiva; hereditary gingival hyperplasia; hgf

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Hereditary gingival fibromatosisGARD ID 16582 · 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 Hereditary gingival fibromatosis.

Explore the Hereditary gingival fibromatosis blog

Explore research for Hereditary gingival fibromatosis

Explore actively recruiting Hereditary gingival fibromatosis studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Hereditary gingival fibromatosis with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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