Trichoscopy and Systemic Scleroderma

* Few data are available on scalp involvement in systemic scleroderma. * Few data are available on the association between scalp abnormalities and features of systemic scleroderma * Trichoscopy is a simple, reproducible, noninvasive examination that is part of the examination of hairy areas in routine dermatologic practice * There is a lack of simple, noninvasive examinations to evaluate patients with systemic scleroderma The objective will be to evaluate the contribution of trichoscopy in the evaluation of patients with systemic scleroderma

Inclusion Criteria: * Patient who fulfils the Systemic scleroderma ACR-EULAR 2013 criteria * Signed informed consent * Being social insured Exclusion Criteria: * Patients aged less than 18 years old * patients under legal protection * patients deprived of their liberty * patients in emergency situations * patients who refused or unable to give informed consent * For the control group: sclap inflammatory disease active the day of the examination