Good Evening. Just wanna asked a favor can you please elaborate more about firbotic ptb. based on my apicolordotic view result there's a firbotic ptb on my right upper lungs undetermined. and base on my research the symptoms are dry cough and can have a breathing problem which is i didn't experience one of these. But everytime I inhale dust or being exposed in sunlight that can irritate my eyes i sneeze non stop.