Both shingles and psoriasis are common cutaneous diseases. About 25% of the 
psoriatic patients develop Koebner phenomenon (KP) after various injuries, and 
in rare instance, KP may occur at the site of healed or healing shingles.We 
report a 30-year-old man with 7-month history of scalp psoriasis who developed 
KP at the areas of developing shingles. Cutaneous examination revealed scaly 
erythematous papules and plaques located on the scalp and forehead, and groups 
of clustered erythematous papules with silver scales in the dermatome 
distributed on the right side of chest wall the prior herpes zoster lesions 
involved. After removal of the scales on the papules, underlying bleeding points 
were present.The lesions on chest had good response to anti-psoriatic therapies, 
as the lesions on scalp did. After a year of follow-up, recurrent psoriasis 
occurred, but the lesions were located only on the scalp, and the areas of prior 
occurrence of shingles, because of which we considered diagnosis of recurrent 
psoriasis rather than relapsing KP for the chest lesions.Not only the healing 
and healed shingles can trigger KP in psoriasis, but also the developing 
shingles can cause psoriatic KP at the site of herpes zoster lesions.