Jack Osbourne, who grew up before the nation’s eyes on The Osbournes, recently revealed that he has multiple sclerosis. According to an interview with People, the 26-year-old Osbourne found out his diagnosis just a few weeks after he and fiancée Lisa Stelly welcomed their first child, daughter Pearl Clementine. He received the news from a neurologist when he partially lost vision in his right eye last month. The autoimmune disease, which assaults the central nervous system, can cause difficulty with vision and balance, among other symptoms. The Osbourne clan has rallied around Jack, who in recent years has become an extreme-sports fanatic, as he adjusts to a new daily treatment regiment. “‘Adapt and overcome’ is my new motto,’” he told Hello! magazine.