Zosteriform Lichen planus.

Ordinarily, Lichen planus (LP) is as easily recognizable as an old friend of a dermatologist. But some times it comes in disguise. It has been reported to occur in the scars of previous herpes zoster lesions. Zosteriform pattern in LP, without evidence of herpes zoster, is an extremely rare occurrence and such presentation of the disease over head and neck region, to the best of our knowledge, was not reported in literature before. We present a patient who had grouped lichenoid lesions on one side of the neck with no previous or concomitant history of herpes zoster on the involved site or elsewhere on the body.