i'm a 56yr old diagnosed 4 yrs ago with symptoms from 9 yrs ago. i've been struggling with shortness of breath ever since i started on sinemet and mirapex three years ago. shortness of breath may occur at any time, even when i'm sitting down or laying in bed. very disconcerting. ive had various cardiac tests ie stress test because of previous cardiac problems, nothing however has been found. my neuro says that many pd patients do not use their lungs completely as may happen with virtually any organ that is neurologically stimulated. but again everyone is different. i would appreciate any info or thoughts anyone else may have. peace john