[Effective treatment of interstitial pneumonia with tacrolimus in a patient with dermatomyositis who was intolerant to cyclosporin-A].

A 67-year-old woman was admitted to our hospital because of erythema in the eyelids and fingers of both hands. Slight muscle weakness in the proximal limbs, a heliotrope rash, Gottron's sign, and mechanic's hand were observed. Creatine kinase serum levels were slightly elevated (376U/l), and the patient tested negative for all autoantibodies except for the antinuclear antibody. Chest computed tomography showed interstitial pneumonia (IP). Based on these findings, the patient was given a diagnosis of dermatomyositis (DM) associated with IP. Combined prednisolone (1 mg/kg/day) and cyclosporin-A (Cy-A 4 mg/kg/day) therapy was initiated; the patient showed marked improvement, but the Cy-A caused liver damage. Therefore, Cy-A was tapered off, and tacrolimus was simultaneously started, initially at a dose of 1 mg/day, building up to a sustained dose of 4 mg/day. The patient's IP and liver condition improved. Tacrolimus is a useful drug for the treatment of DM-IP in cases where Cy-A causes intolerable adverse reactions.