Conversation: The conversation between human and AI assistant.
[|Human|] I have shortness of breath and heaviness in both of my lungs. Recent CAT scan showed fibrotic changes in the small lymph nodes in my lungs. I have been an asthmatic for over 35 years and in the last few months my lungs feel very different. At times, it is difficult to speak without shortness of breath and slight coughing. Not sure if this is related... but my fingers and hands turn blue when I exercise. Any ideas?
[|AI|]  HI, thanks for using Chat Doctor Fibrosis can occur in persons with history of severe or in those with uncontrolled asthma. It means that normal lung tissue has been replaced by scar tissue. The reduced ability of your lungs to transfer oxygen to the blood would cause the shortness of breath and also the blue nail discoloration on exercise. It would be best to discuss these change of symptoms with your pulmonologist.  Your medication may need to be altered. I hope this helps