[Linear vitiligo going on a varix way: possible association with Koebner phenomenon].

We present the case of a woman of 40 years of age with a history of obesity, systemic hypertension, and migraine, and who was on treatment with clorthalidone, propanolol, and rizatriptan. She was seen for a clearly delimited hypopigmented macule on the lateral aspect of the left thigh and lower leg, following the path of a varicose vein (Figure 1). The lesion appeared on an area of previously healthy skin. There were no other lesions characteristic of vitiligo, although the patient reported a family history of vitiligo in her maternal grandmother. Additional tests, including complete blood count, routine biochemistry, and autoimmune screening (antinuclear and antithyroid antibodies) were normal or negative. Histology of the lesion showed a normal epidermis, with the presence of vascular ectasia in the superficial dermis and no melanophages or signs of inflammation (Figure 2). Masson-Fontana staining revealed an absence of melanocytes in the basal layer (Figure 3). Clinical and histology findings were consistent with a diagnosis of vitiligo. The patient was followed up for 10 months with no treatment and perifollicular re-pigmentation was observed, supporting the previous diagnosis.