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Living with Pili torti-onychodysplasia syndrome

A very rare condition present from birth that affects hair, nails and sometimes the skin, with brittle twisted hair and nail changes.

Understanding Pili torti-onychodysplasia syndrome

Pili torti-onychodysplasia syndrome is a very rare type of ectodermal dysplasia that affects the hair and nails.

People are born with nail changes, especially at the tips, and have very thin hair or hair loss, including the eyebrows, eyelashes and body hair. Other hair is brittle and twisted. GARD lists skin changes, cleft lip or palate, and webbed fingers or toes. It has not been described in the literature since 1991.

Signs & symptoms

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

  • Brittle, twisted hair
  • Missing eyebrows and eyelashes
  • Hair loss over the whole body
  • Poorly formed nails from birth
  • Thickened palms and soles
  • Cleft lip or cleft palate

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.

  4. Connect with expert centers

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

Care & treatment

Care team
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
Would genetic testing help find the cause in our family?
Which specialists should care for the skin, nails and any cleft?
What skin and hair care is recommended?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive

GARD says changes in genes cause this condition but doesn't name a gene. It is autosomal recessive, meaning a child inherits a changed copy of the gene from each parent.

GeneticSkin

Also known as: pili torti onychodysplasia syndrome

Patient organizations

Source: NIH GARD · Pili torti-onychodysplasia syndromeGARD ID 4364 · 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 Pili torti-onychodysplasia syndrome.

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