Hi vicki, and thanks for your post and the question - it's a good one! You may be aware we cannot provide medical advice or diagnostics over the internet (for your own safety), but your concern certainly warrants a reply.
Although there are comorbidities that may be associated with COPD, there are other conditions that may result in both constipation and diarrhea. As well, these may be side effects of medications, too.
In order to determine what is causing this for your mother, you may want to direct this question towards mom's physician. The physician, you and mom know her, and her illnesses, the best. The doctor should be able to assess mom and determine what may be responsible to her discomfort. Once the cause is determined, a treatment plan can be worked out.
What do you think?
Leon (site moderator COPD.net)