My Dad is 60yrs old, He is suffering from a cough and chest congestion, He coughs too much continously Earlier he used feel fine after taking the prescribed medicine but these days when sometime he coughs too strong, He is getting fainted and I noticed He stop breathing for that moment and when we shake him hard he comes back normal after taking a loud breath through his mouth,We are not able to understand the condition, Please help in understanding this condition and guide me on its cure. recently He fainted in same manner 3 times. Please Help