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Living with Familial keratoacanthoma

A rare inherited skin condition with many skin growths, some of which heal on their own.

Understanding Familial keratoacanthoma

Familial keratoacanthoma is a rare inherited skin condition with multiple skin growths that has features of two related skin conditions.

People can have many small bumps, larger lesions that heal on their own, and lesions that form nodules or open sores. The growths do not tend to appear on the moist linings of the body. It can start at any time in life.

Signs & symptoms

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

  • Small raised bumps (papules)
  • Firm lumps under the skin (nodules)
  • Open skin sores (ulcers)
  • Thickened skin (hyperkeratosis)
  • Wart-like growths (papillomas)
  • Adenoma sebaceum (small facial bumps)

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 cancer specialists, genetic specialists and skin, hair, and nail specialists.

  3. Ask which tests can help

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

Care & treatment

Care team
Cancer specialists (oncologists); Genetic specialists (geneticists); Skin, hair, and nail specialists (dermatologists)
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 Children's Skin Disease Foundation
  • 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
Which skin growths should be checked or biopsied?
How often should I have my skin examined by a dermatologist?
Should my relatives have their skin checked?

Quick facts

Symptoms usually startany time in life
InheritanceAutosomal Dominant

Changes in genes cause it. It is autosomal dominant, which means one changed copy of the gene is enough.

GeneticSkin

Also known as: hereditary keratoacanthoma; multiple familial keratoacanthoma; multiple keratoacanthoma

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Familial keratoacanthomaGARD ID 18693 · 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 Familial keratoacanthoma.

Explore the Familial keratoacanthoma blog

Explore research for Familial keratoacanthoma

Explore actively recruiting Familial keratoacanthoma studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Familial keratoacanthoma 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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