i have trouble breathing and i am coughing an awful lot also my arm becomes uncomfortably numb and it’s even worse when i go into a coughing fit?
my opinion is your dry high intensity frequent cough causes muscle spasm in your neck and an impinged nerve supplying your arms are compressed while coughing. try breathing humid air. drink warm fluids. get a neck xray to check for cervical rib or neck impinged nerve.