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Living with Pili gemini

A hair follicle condition in which one follicle grows two or more hair shafts through a single opening.

Understanding Pili gemini

Pili gemini is a hair condition in which the tip of the hair follicle splits and grows two hair shafts out of one opening.

If the tip splits into several tips, several hairs grow, which is called pili multigemini. It can happen in any type of hair. GARD says it can be seen at a variety of ages.

Signs & symptoms

GARD lists these among the most common signs:

  • Two hairs growing from one follicle opening
  • Hair shafts flattened and twisted at spots
  • Unusual hair shaft shape

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
How is pili gemini confirmed?
Does it affect hair growth or strength?
Do I need any treatment, or can it just be watched?

Quick facts

Symptoms usually starta variety of ages

GARD says changes in genes cause this condition but doesn't name a gene or describe an inheritance pattern.

GeneticSkin

Also known as: pili multigemini

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Pili geminiGARD ID 19026 · 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 gemini.

Explore the Pili gemini blog

Explore research for Pili gemini

Explore actively recruiting Pili gemini studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Pili gemini 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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I can help you find recruiting Pili gemini studies. Enter a ZIP code, address or city below and I'll look within 50 miles.

Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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HealthStory evolves private journaling with a living AI journal that talks back and asks thoughtful questions, helping you capture your Pili gemini experiences more deeply and prepare for better conversations with your doctors and care team.

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