Image from Wikipedia A chronic cough that's been going on for months to years is an extremely tough problem to figure out due to the many possible triggers including reflux , reactive airway disease, post-nasal drip, allergies, etc. For Def Leppard's guitarist Vivian Campbell, his chronic cough was ultimately found to be due to Hodgkin's Lymphoma in his chest around his windpipe. In his own word's that he posted on the band's Facebook page (June 10, 2013 post): “I …