[A case of Sai-rei-to-induced pneumonitis].

A 77-year-old man was given emergency admission because of fever and dyspnea in October, 2005. He had been treated with Sai-rei-to, a herbal drug, for tinnitus. Laboratory data showed high values of C-reactive protein and liver dysfunction. Chest X-ray and CT films revealed ground-glass attenuation in both lung fields. Bronchoalveolar lavage showed an increase in number of lymphocytes and the lymphocyte-stimulation test was positive for Sai-rei-to. Based on the above findings, we diagnosed this case as Sai-rei-to-induced pneumonitis. The patient recovered after discontinuation of Sai-rei-to and corticosteroid therapy.