History
Many dermatoses may take linear configuration as a such or as a part of Kobner’s isomorphic phenomenon. Of these dermatoses; psoriasis, lichen planus, plant allergic contact dermatitis, linear epidermal nevi and vitiligo are prototypes. The current case is a 35-year-old man has had linear lichen planus with classical purplish papules extending along the radial side of the index finger of about one year duration.