Im really worried about my dad. He was just diagnosed with ILD Fibrotic NSIP and he's been dealing with a dry cough for two years and shortness of breath for the past six months. He's been prescribed Perfinex 200, Iverped, and Atarax. His oximeter shows oxygen levels between 96-98%. Could you give me an idea of what his life expectancy might be with this condition? Is there a chance that his symptoms wont get worse?