i am suffering from intertestial lung disease, recently i took blood test ana which is positive, i took ct scan , which say my lungs have become harden, doctor is suggesting me to take steriod , predmet, i am not interested to take steriod, because i have already taken in the year 2007 october for 6 months, the same disease is accured again, pls suggest some medicines apart from steriod, pls reply immediately