Combination of Methotrexate and Phototherapy Versus Phototherapy in Adults With Progressive Vitiligo

Inclusion Criteria: * Subject male or female age over 18 years old * Diagnosis of non-segmental (symmetrical) vitiligo with body surface area ≥10% * Active non-segmental vitiligo defined by Non-segmental vitiligo with new patches or extension of old lesions during the last 6 months AND Presence of hypochromic aspect under Wood's lamp examination and/or perifollicular hypopigmentation under Wood's lamp examination. * Signed informed consent document * Male patients agreeing to use a reliable method of birth control during the study i. e. preservative and for at least 6 months following the last dose of investigational product, the patient's partner treated by methotrexate must be notified of the teratogenic risk of methotrexate and should be under effective contraception throughout the study and for at least 6 months following the last dose of investigational product. * Women of childbearing potential who are negatively tested for pregnancy and agree to use a reliable method of birth control (every month) or remain abstinent during the study and for at least 6 months following the last dose of investigational product. Methods of contraception considered acceptable include oral contraceptives, contraceptive patch, intrauterine device, vaginal ring * Patient registered to the French Social Security Exclusion Criteria: * Segmental or mixed vitiligo * Patients who have known active liver disease (with the exception of a simple liver steatosis, transaminases and/or alkaline phos…