A case of zosteriform lichen planus

Zosteriform lichen planus is a rare variant of lichen planus, which shows lichenoid papules in a dermatomal arrangement. Unlike the linear lichen planus developing a linear pattern, zosteriform lichen planus forms a broader band that follows the dermatomes. A few cases of zosteriform lichen planus occurring on the site of healed herpes zoster have been reported, and were assumed to represent Wolf's isotopic response. However, even fewer cases have been reported that developed without any previous history of herpes zoster. We present a 32-year-old male patient who showed a hyperpigmented papuloplaques in a zosteriform arrangement along the right upper back, shoulder and arm without a history of herpes zoster.