Hi @inquiringminds, welcome to Mayo Clinic Connect. You'll notice that I moved your message to the Breast Cancer group https://connect.mayoclinic.org/group/breast-cancer/

In addition to the link that @johnbishop provided, I thought you might like to connect with other members who have had treatment for breast cancer who may have had a similar experience, like @roch, @pegannie @elizm @trixie1313 and @dianamiracle

InquiringMinds, are you saying that the cough started before you had radiation? Or only 4 months ago?