In all interferon cases therapy was discontinued, and five of these cases resolved without treatment [8] [9] [10] . Eight patients needed to be treated with various steroids. Interstitial pneumonitis in a 72-year-old female patient was treated with 30 mg/day prednisolone, and she was then maintained on a regimen of intermittent pulse therapy with 100 mg/day; a 56-year-old male patient was started with 2 g/day methylprednisolone for 3 days and 40 mg/day prednisolone for 2 days [10] . Prednisolone (60 mg/day) and 100 mg/day azathioprine were given after a relapse of interstitial pneumonitis that was initially treated with 30 mg/day prednisolone [11] .