Dermoscopy in Primary Raynaud's Phenomenon

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

100 participants

Study Classification

OBSERVATIONAL

Study Start Date

2021-01-01

Study Completion Date

2021-05-15

Brief Summary

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Raynaud's phenomenon (RP) is very frequent in general population (up to 10%). Nailfold capillaroscopy (NFC) is recommended for patients presenting RP, to eliminate systemic disease such as systemic sclerosis. NFC is not easily available in clinical practice. Dermoscopy, used for pigmentary skin lesion screening, may help to detect giant loops, hemorrhages or other capillaries anomalies. However, no study has evaluated the performance of dermoscopy in primary RP. The objective is to determinate which items in dermoscopy are correlated with a normal NFC and predict with a good negative predictive value, a normal NFC in RP patients. The secondary objective is to assess inter-observer reproducibility of dermoscopy in patients with RP.

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Detailed Description

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Raynaud's phenomenon (RP) is very frequent in general population (up to 10%). Nailfold capillaroscopy (NFC) is recommended for patients presenting RP, to eliminate systemic disease such as systemic sclerosis. NFC is not easily available in clinical practice. Dermoscopy, used for pigmentary skin lesion screening, may help to detect giant loops, hemorrhages or other capillaries anomalies. However, no study evaluated the performance of dermoscopy in primary RP. A preliminary study (Tenon Hospital) showed an interest of dermoscopy in primary and secondary RP, with a negative predictive value of dermoscopy of 100% for capillaroscopy.

This is a prospective, multicentric French study comparing dermoscopy and capillaroscopy in patients attending dermatology or vascular medicine departments for the first evaluation of a RP.

The objective is to determinate which items in dermoscopy are correlated with a normal NFC and predict with a good negative predictive value, a normal NFC in RP patients. The secondary objective is to assess inter-observer reproducibility of dermoscopy in patients with RP.

The main hypothesis is that a normal dermocopy on five items is highly predictive of a normal NFC.

During a first consultation for RP, NFC will be realized with a clinical exam and a biological test (antinuclear antibodies), as official recommendations. Dermoscopy of peri-ungueal area will be realized by another investigator, if possible during the same consultation. Photographs of all fingers, except thumbs, will be made and will be reviewed by another investigator of another center. There will be no follow-up.

Conditions

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Raynaud Phenomenon

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Interventions

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Dermoscopy

dermoscopy is currently used in daily practice in dermatology, for melanoma screening. Dermoscopy will be used in this study on peri-ungueal area.

This is a non-invasive and painless exam.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* age \> 18 years
* first consultation for bilateral Raynaud's phenomenon (RP)
* Bilateral Raynaud's phenomenon affecting at least one finger of each hand defined by a paroxysmal syncopal phase on exposure to cold,
* Affiliated to the French health care systeme