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Living with Focal dermal hypoplasia

A genetic condition that mainly affects the skin, bones, eyes and face and is seen mostly in females.

Understanding Focal dermal hypoplasia

Focal dermal hypoplasia is a genetic disorder that mainly affects the skin, skeleton, eyes, and face.

About 90 percent of people with it are female, and males usually have milder signs. Skin changes are present from birth and include streaks of thin skin, fatty nodules, and areas lacking skin. Wart-like growths (papillomas) can form later. Many people have hand and foot differences and eye problems. Intelligence is usually not affected.

Signs & symptoms

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

  • Streaks of thin or missing skin
  • Skin color changes
  • Wart-like growths (papillomas)
  • Small, ridged nails and sparse hair
  • Missing, fused or webbed fingers or toes
  • Eye differences such as small eyes or coloboma

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 brain and nervous system specialists, eye disease specialists, genetic specialists and skin, hair, and nail specialists.

  3. Consider genetic testing

    Changes in PORCN are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    National Foundation for Ectodermal Dysplasias may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Eye disease specialists (ophthalmologists); Genetic specialists (geneticists); Skin, hair, and nail specialists (dermatologists)
Expert care
Expert lists: National Foundation for Ectodermal Dysplasias
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 National Foundation for Ectodermal Dysplasias and other patient organizations
  • 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
Should we have genetic testing for the PORCN gene?
Do the papillomas need to be checked or removed?
Which specialists should follow eyes, skin and bones?

Quick facts

Symptoms usually startduring Pregnancy and as a Newborn
InheritanceX-Linked
GenesPORCN

Changes in the PORCN gene cause it. It is X-linked, which means the gene is on the X chromosome.

GeneticNeurologicalSkin

Also known as: fdh; fdh - focal dermal hypoplasia; focal dermal hypoplasia, x-linked dominant; fodh - focal dermal hypoplasia; goltz syndrome; goltz-gorlin syndrome

Patient organizations

Source: NIH GARD · Focal dermal hypoplasiaGARD ID 6457 · 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 Focal dermal hypoplasia.

Explore the Focal dermal hypoplasia blog

Explore research for Focal dermal hypoplasia

Explore actively recruiting Focal dermal hypoplasia studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Focal dermal hypoplasia 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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