A 42-year-old woman developed a papular eruption mainly localized on t
he light side of the body and with a zosteriform pattern within the ne
rve segments TH6-TH12, L(1)-L(4) as well as S-1 and S-2. The skin lesi
ons were characteristic of lichen ruber planus. The zosteriform arrang
e ment of lichenoid papules is rare and is interpreted as a cutaneous
reaction possibly triggered by some neural factor.