A 22-year-old man visited our department with a 18-year-history of rec
urrent vesicular eruption on his skin when exposed to the sun. History
revealed that the skin lesions developed as vesicles at first, then o
ver the next several days, they formed crusts and healed with scarring
. We were able to induce skin lesions by a repetitive UV-A provocation
test. By the clinical and histologic features of the induced lesions,
the case was diagnosed as hydroa vacciniforme (HV). However, no vesic
ular lesions were found on physical examination. Instead, in addition
to varioliform scarring, we found various unusual clinical manifestati
ons: burn-like lesions and crusts, flexion contracture of the digitum,
and ear lobe mutilation. The ear lobe mutilation, which had not been
reported previously in HV, was especially interesting.