Celebrity Jack Osbourne Diagnosed with Multiple Sclerosis By People Staff Updated on December 1, 2020 11:33 PM Share Tweet Pin Email Photo: Paul Archuleta/FilmMagic Jack Osbourne has been diagnosed with multiple sclerosis, attribution TK. Osbourne, 26, the son of rock legend Ozzy Osbourne and wife Sharon, was among the guests the May 18 “Glam Rock to Erase MS” event in Los Angeles that raised $1.8 million to provide treatment and find a cure for multiple sclerosis. On April 24, Osbourne and fiancée Lisa Stelly welcomed daughter Pearl Clementine. Multiple sclerosis is a disease that affects the central nervous system – the brain and spinal cord – and can cause problems with muscle control and strength, vision, balance, feeling, and thinking MS differs in each case, with some people going through life with only minor problems and others becoming seriously disabled, although people are somewhere in between. Go to Health.com for more information.