Jason LaVeris

Are you ready for a total bummer? Jack Osbourne, the 26-year-old son of Ozzy Osbourne and a star in his own right with MTV reality show The Osbournes, has been diagnosed with multiple sclerosis.

According to the BBC, Osbourne's family said that he was diagnosed based on tests taken after he lost 60% of the vision in his right eye last year. The diagnosis came in three weeks ago. About his son's diagnosis, Ozzy said, "If it was me, you'd think: 'Ozzy had a reputation and it caught up with him,' but Jack is such a good guy."

Jack Osbourne plans to use daily drug treatments, holistic therapies and changes in his lifestyle to combat the disease, which is benign in 20% of those afflicted and progressively more debilitating in another 15%.

Our hearts go out to Jack Osbourne and his whole family.