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Introduction <p>Ultraviolet-induced fluorescence dermoscopy (UVFD) is increasingly utilized in dermatooncology and general dermatology. The objective of the study was to characterize the ultraviolet-induced fluorescence trichoscopy (UVFT) findings in a wide range of hair and scalp conditions.</p> Methods <p>Consecutive patients with non-scarring alopecias (alopecia areata, AA, <i>n</i> = 40; androgenetic alopecia, AGA, <i>n</i> = 40), scarring alopecias (frontal fibrosing alopecia, FFA, <i>n</i> = 20; lichen planopilaris, LPP, <i>n</i> = 20; folliculitis decalvans, FD, <i>n</i> = 14; discoid lupus erythematosus, DLE, <i>n</i> = 23), and inflammatory scalp conditions (psoriasis, <i>n</i> = 30; seborrheic dermatitis, <i>n</i> = 14) were included. Examinations were performed using polarized trichoscopy and UVFT.</p> Results <p>The following features were observed under UVFT: white-blue perifollicular fluorescence, white-blue interfollicular fluorescence, irregular confluent dark areas, dark follicular dots, dark perifollicular areas, regular/irregular pink-red follicular fluorescence, regular/irregular green follicular fluorescence, short white hair, black dots, exclamation mark hair, double/triple white follicular dots, pink-red fluorescence of the scales, pink-red fluorescence of the background. Non-scarring alopecias showed more frequently pink-red or green follicular fluorescence (<i>p</i> &lt; 0.001), dark follicular dots (<i>p</i> &lt; 0.001), short white hair (<i>p</i> &lt; 0.001), and double/triple white follicular dots (<i>p</i> &lt; 0.001). In scarring alopecias, white-blue perifollicular fluorescence (<i>p</i> &lt; 0.001), dark perifollicular areas (<i>p</i> &lt; 0.001), and dark confluent areas (<i>p</i> &lt; 0.001) were more commonly observed. Psoriasis showed more frequently pink-red fluorescence of the scales than seborrheic dermatitis (<i>p</i> = 0.019).</p> Conclusion <p>UVFT supports the differentiation between scarring and non-scarring alopecia, as well as between psoriasis and seborrheic dermatitis. UVFT may hypothetically facilitate the biopsy site selection by highlighting the subclinical perifollicular and interfollicular inflammation.</p>

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Application of Ultraviolet-Induced Fluorescence Trichoscopy (UVFT) in Hair and Scalp Diseases

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月3日

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  • Kinga Kołcz,
  • Adam Reich,
  • Magdalena Żychowska

摘要

Introduction

Ultraviolet-induced fluorescence dermoscopy (UVFD) is increasingly utilized in dermatooncology and general dermatology. The objective of the study was to characterize the ultraviolet-induced fluorescence trichoscopy (UVFT) findings in a wide range of hair and scalp conditions.

Methods

Consecutive patients with non-scarring alopecias (alopecia areata, AA, n = 40; androgenetic alopecia, AGA, n = 40), scarring alopecias (frontal fibrosing alopecia, FFA, n = 20; lichen planopilaris, LPP, n = 20; folliculitis decalvans, FD, n = 14; discoid lupus erythematosus, DLE, n = 23), and inflammatory scalp conditions (psoriasis, n = 30; seborrheic dermatitis, n = 14) were included. Examinations were performed using polarized trichoscopy and UVFT.

Results

The following features were observed under UVFT: white-blue perifollicular fluorescence, white-blue interfollicular fluorescence, irregular confluent dark areas, dark follicular dots, dark perifollicular areas, regular/irregular pink-red follicular fluorescence, regular/irregular green follicular fluorescence, short white hair, black dots, exclamation mark hair, double/triple white follicular dots, pink-red fluorescence of the scales, pink-red fluorescence of the background. Non-scarring alopecias showed more frequently pink-red or green follicular fluorescence (p < 0.001), dark follicular dots (p < 0.001), short white hair (p < 0.001), and double/triple white follicular dots (p < 0.001). In scarring alopecias, white-blue perifollicular fluorescence (p < 0.001), dark perifollicular areas (p < 0.001), and dark confluent areas (p < 0.001) were more commonly observed. Psoriasis showed more frequently pink-red fluorescence of the scales than seborrheic dermatitis (p = 0.019).

Conclusion

UVFT supports the differentiation between scarring and non-scarring alopecia, as well as between psoriasis and seborrheic dermatitis. UVFT may hypothetically facilitate the biopsy site selection by highlighting the subclinical perifollicular and interfollicular inflammation.