Natural History and Pathogenesis of Alopecia in Children and Adults
Public ClinicalTrials.gov record NCT05502796. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Background: Alopecia is the loss of hair or lack of hair growth. It is often related to an immune disorder that disrupts the growth of hair. Hair loss can affect a person s physical and mental health. The causes of alopecia are not well understood. This natural history study will examine causes of alopecia so better treatments can be developed. Objective: To learn why some people have alopecia. This study will look at factors related to genes, the immune system, and the bacteria, viruses, and fungi that live on the skin. Eligibility: People aged 2 years and older with immune-mediated alopecia that affects 50% of their scalp hair. Design: Participants will have at least 1 visit to the clinic. Some will have follow-up visits once a year for up to 5 years. Each visit will last 2 to 4 hours. Participants will have a physical exam. They will have blood drawn from a vein. They will answer questions about the medications they take, their allergies, and their family history. Photographs of their skin and scalp will be taken. Soft cotton swabs will be rubbed on their skin to pick up organisms that live there. Two pieces of skin from the scalp will be cut away. The pieces will be no more than a quarter of an inch in size. The area will first be numbed with an injectable anesthetic. The wound will be closed with stitches or gel foam. The biopsy is optional in children younger than 12. Participants will take a questionnaire about how hair loss affects their quality of life.
Study identification
- NCT ID
- NCT05502796
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 39 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 2 Years to 120 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Sep 18, 2022
- Primary completion
- Jan 21, 2025
- Completion
- Jan 22, 2025
- Last update posted
- Jun 4, 2026
2022 – 2025
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| National Institutes of Health Clinical Center | Bethesda | Maryland | 20892 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT05502796, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jun 4, 2026 · Synced Sep 5, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT05502796 live on ClinicalTrials.gov.