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Living with Hypertrichosis cubiti-short stature syndrome

A rare condition with extra hair on the elbows and arms, sometimes with short height, developmental delay, or speech differences.

Understanding Hypertrichosis cubiti-short stature syndrome

Hypertrichosis cubiti-short stature syndrome is a rare hair condition with extra hair on the elbows and forearms.

The extra hair is symmetrical and appears on the outer surfaces of the arms, especially the elbows. It is present from birth or starts early. Some people also have short height, developmental delay, facial differences, or intellectual disability. It begins in childhood.

Signs & symptoms

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

  • Extra hair on the elbows and arms
  • Severe short height
  • Short upper arms and legs
  • Round face
  • Speech differences
  • Facial asymmetry

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
Do I need a growth specialist?
What help is there for speech and learning?
Would genetic counseling help our family?

Quick facts

Symptoms usually startChild
InheritanceAutosomal Dominant

Changes in genes (also called variants) cause this condition. It is autosomal dominant, meaning one changed copy of the gene can be enough to cause it.

GeneticSkin

Also known as: elbow hypertrichosis; hairy elbow; hairy elbow syndrome; hairy elbows; hairy elbows syndrome; hypertrichosis cubiti

Patient organizations

Source: NIH GARD · Hypertrichosis cubiti-short stature syndromeGARD ID 143 · 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 Hypertrichosis cubiti-short stature syndrome.

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