Eruptions similar to those of lichen planus (LP) are associated with s
ystemic diseases or have been induced by many drugs. Linear lesions as
a Koebner effect are frequently found in LP but isolated long, narrow
, linear lesions, which may extend the whole length of the limb, are r
are though rather more common in childhood. Some cases of zonal or zos
teriform LP have been described in the literature. We describe a case
of LP with a linear distribution following the Blaschko embryologic li
nes induced by nicergoline in a 65-year-old woman with a 6-month histo
ry of a pruritic eruption of erythematoviolaceous papules on the left
breast, trunk and upper limb, with histological features of LP. It wou
ld be the first case of linear LP associated with drugs.