TY - JOUR
T1 - Videodermoscopy does not enhance diagnosis of scalp contact dermatitis due to topical minoxidil
AU - Tosti, Antonella
AU - Donati, Aline
AU - Vincenzi, Colombina
AU - Fabbrocini, Gabriella
PY - 2009/7
Y1 - 2009/7
N2 - Background: Videodermoscopy (VD) is a noninvasive diagnostic tool that provides useful information for the differential diagnosis of scalp disorders. Objectives: The aim of this study was to investigate if dermoscopy may help the clinician in the diagnosis of contact dermatitis of the scalp. Materials and Methods: We analyzed the dermoscopic images taken from 7 patients with contact dermatitis due to topical minoxidil, 6 patients complaining of intense scalp itching during treatment with topical minoxidil but with negative patch tests and 19 controls. The following dermoscopic patterns described for scalp diseases were evaluated: Vascular patterns (simple loops, twisted loops and arborizing lines), follicular/perifollicular patterns (yellow dots, empty ostia, white dots, peripilar signs), white scales, yellow scales, follicular plugging, hair diameter diversity, honeycomb pattern and short regrowing hairs. Findings were graded from 0-4, according to severity in 20-fold magnifications. Statistical analysis included univariate analysis and Chi-square test by SPSS version 12. Results: There were no statistical differences in the analysis of the vascular patterns and scales between the 3 groups. Conclusions: We were not able to detect dermoscopic features that can help the clinician in distinguishing scalp contact dermatitis due to topical minoxidil from other conditions that cause severe scalp itching. In particular, minoxidil contact dermatitis does not produce increase or alterations in the morphology of the scalp vessels or significant scalp scaling when evaluated with dermoscopy.
AB - Background: Videodermoscopy (VD) is a noninvasive diagnostic tool that provides useful information for the differential diagnosis of scalp disorders. Objectives: The aim of this study was to investigate if dermoscopy may help the clinician in the diagnosis of contact dermatitis of the scalp. Materials and Methods: We analyzed the dermoscopic images taken from 7 patients with contact dermatitis due to topical minoxidil, 6 patients complaining of intense scalp itching during treatment with topical minoxidil but with negative patch tests and 19 controls. The following dermoscopic patterns described for scalp diseases were evaluated: Vascular patterns (simple loops, twisted loops and arborizing lines), follicular/perifollicular patterns (yellow dots, empty ostia, white dots, peripilar signs), white scales, yellow scales, follicular plugging, hair diameter diversity, honeycomb pattern and short regrowing hairs. Findings were graded from 0-4, according to severity in 20-fold magnifications. Statistical analysis included univariate analysis and Chi-square test by SPSS version 12. Results: There were no statistical differences in the analysis of the vascular patterns and scales between the 3 groups. Conclusions: We were not able to detect dermoscopic features that can help the clinician in distinguishing scalp contact dermatitis due to topical minoxidil from other conditions that cause severe scalp itching. In particular, minoxidil contact dermatitis does not produce increase or alterations in the morphology of the scalp vessels or significant scalp scaling when evaluated with dermoscopy.
KW - Dermoscopic patterns
KW - minoxidil
KW - scalp allergic contact dermatitis
KW - videodermoscopy
UR - http://www.scopus.com/inward/record.url?scp=84865529549&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84865529549&partnerID=8YFLogxK
U2 - 10.4103/0974-7753.58557
DO - 10.4103/0974-7753.58557
M3 - Article
C2 - 20927236
AN - SCOPUS:84865529549
VL - 1
SP - 134
EP - 137
JO - International Journal of Trichology
JF - International Journal of Trichology
SN - 0974-7753
IS - 2
ER -