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Living with Marie Unna syndrome

A rare inherited hair loss condition with little hair at birth, coarse hair in childhood, and more hair loss after puberty.

Understanding Marie Unna syndrome

Marie Unna syndrome is a rare inherited hair loss disorder.

Babies are born with little or no scalp hair, eyebrows, or eyelashes. Hair becomes coarse and wiry in childhood. Hair loss then gets worse starting around puberty.

Signs & symptoms

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

  • Sparse or no scalp hair
  • Coarse, wiry hair
  • Missing or sparse eyebrows
  • Sparse or missing eyelashes
  • Progressive hair loss (alopecia)

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 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
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
Is genetic testing available for Marie Unna syndrome?
What can be done to care for fragile hair and scalp?
What is the chance of passing this on to my children?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant

Changes in genes (also called variants) cause this condition. It is inherited in an autosomal dominant way, so a change in one copy of the gene can be enough.

GeneticSkin

Also known as: hr hypotrichosis; hypotrichosis caused by mutation in hr; hypotrichosis, marie unna type; marie unna congenital hypotrichosis; marie unna hereditary hypotrichosis; muhh

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Marie Unna syndromeGARD ID 3390 · 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 Marie Unna syndrome.

Explore the Marie Unna syndrome blog

Explore research for Marie Unna syndrome

Explore actively recruiting Marie Unna syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Marie Unna syndrome 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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