Alan Jackson is opening up to fans about a disease he’s been battling for years. The 62-year-old country singer told the “Today” show that he’s been battling a “no cure” degenerative neurological condition called Charcot-Marie-Tooth disease for the better part of a decade. “It’s not going to kill me. It’s not deadly,” Jackson said about the disease he inherited from his father. “But it’s related (to) muscular dystrophy and Parkinson’s disease,” he added, detailing how CMT has cut into the “Chattahoochee” musician’s ability to perform live.