10.6084/m9.figshare.4793773.v1
Jasso-Olivares J.C.
Jasso-Olivares
J.C.
Tosti A.
Tosti
A.
Miteva M.
Miteva
M.
Domínguez-Cherit J.
Domínguez-Cherit
J.
Díaz-González J.M.
Díaz-González
J.M.
Supplementary Material for: Clinical and Dermoscopic Features of the Scalp in 31 Patients with Dermatomyositis
Karger Publishers
2017
Dermatomyositis
Scalp dermatomyositis
Trichoscopy
Capillaroscopy
Alopecia
Itchy erythemato-squamous plaques
2017-03-28 14:12:34
Journal contribution
https://karger.figshare.com/articles/journal_contribution/Supplementary_Material_for_Clinical_and_Dermoscopic_Features_of_the_Scalp_in_31_Patients_with_Dermatomyositis/4793773
<p><b><i>Background:</i></b> Scalp involvement is not directly evaluated
in patients with dermatomyositis (DM). Therefore, the exact frequency
of scalp dermatomyositis (SDM) and its clinical and trichoscopic
characteristics have been poorly described. <b><i>Objective:</i></b> The
aim of this study was to determine the frequency and clinical and
dermoscopic features of SDM in patients diagnosed with DM. <b><i>Methods:</i></b>
We performed a descriptive prospective, cross-sectional observational
study that included all patients diagnosed with DM at a Mexican academic
institute over the course of a year. <b><i>Results:</i></b> Twenty-four
out of 31 patients with DM had scalp involvement at clinical
examination, with a prevalence of 77.4%. SDM was clinically
characterized by erythema in all cases, scales in 20 (83.3%) patients,
nonscarring alopecia in 21 (87.5%) patients, pruritus in 17 (70.8%)
patients, and poikiloderma of the scalp in 16 (51.6%) patients.
Twenty-eight patients were evaluated by trichoscopy. The most consistent
finding was the presence of enlarged capillaries, found in 20 (71.4%)
cases, followed by peripilar casts (57.1%) and tufting and
interfollicular scales in 14 (50%) cases. Twenty-two patients also had
positive nail fold capillaroscopic features similar to those observed by
trichoscopy. <b><i>Limitations:</i></b> The simple size was limited. <b><i>Conclusions:</i></b>
Scalp involvement and alopecia are common in patients with DM, and
trichoscopy shows features similar to those found at capillaroscopy.
Trichoscopy is a very important tool for diagnosis of scalp involvement
in patients with DM.</p>