Medically reviewed by Jurairat J. Molina, MD A chest X-ray cannot diagnose asthma but can provide valuable information during a severe attack or when someone is hospitalized with asthma complications.

There is a bidirectional association between rheumatoid arthritis (RA) and chronic obstructive pulmonary disease (COPD), according to a review published online Dec. 1 in Frontiers in Immunology.