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Living with Trichodysplasia-amelogenesis imperfecta syndrome

A rare genetic condition with thin scalp hair and poorly formed tooth enamel.

Understanding Trichodysplasia-amelogenesis imperfecta syndrome

Trichodysplasia-amelogenesis imperfecta syndrome is a rare genetic condition of the ectodermal dysplasia group that affects hair and tooth enamel.

The hair shafts have tiny pits in their outer layer, and the tooth enamel is poorly formed (amelogenesis imperfecta). It is noticed in the newborn period or infancy.

Signs & symptoms

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

  • Poorly formed tooth enamel (amelogenesis imperfecta)
  • Hair loss from the scalp (alopecia)
  • Hair shaft differences (trichodysplasia)

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, gum, teeth and mouth 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); Gum, teeth and mouth specialists (odontologists); 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
Which dentist or dental specialist should we see for the enamel?
Would genetic counseling help our family?
What hair care do you recommend?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceX-Linked

GARD says changes in genes (variants) cause this condition and that it is X-linked, which means the gene is on the X chromosome. It doesn't name a specific gene.

GeneticSkin

Also known as: trichodysplasia with amelogenesis imperfecta syndrome

Patient organizations

Source: NIH GARD · Trichodysplasia-amelogenesis imperfecta syndromeGARD ID 18943 · 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 Trichodysplasia-amelogenesis imperfecta syndrome.

Explore the Trichodysplasia-amelogenesis imperfecta syndrome blog

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