
Department of Hematology, Kokura Memorial Hospital, Kitakyushu, Japan.
A 68-year-old female patient with IgG kappa-type multiple myeloma was treated with a bortezomib-based regimen. She had bilateral back pain 1 month after the chemotherapy. Because she had no skin lesions, we initially suspected, but did not find, a bone fracture. Two days later, we found eruptions with vesicles involving two different contralateral dermatomes on her chest and back where she had localized pain (