Sharon Osbourne spoke out yesterday (June 18) about her son's health problems and broke down on national television while co-presenting her chat show, 'The Talk'.

Jack Osbourne has revealed that he was diagnosed with multiple sclerosis and his concerned mother opened up about his announcement on live television and gave an emotional speech in which she thanked the public for their support:

"He's great – he's doing really, really good and I want to thank everyone for all their texts and goodwill and love they send to us. Just thank you to everyone for all their good wishes. It's been amazing … for Jack 'cause I really believe that vibes of prayer help."

Jack Osbourne spoke to People magazine about the moment he found out he had the disease and explained he couldn't believe what he was hearing:

"I was just angry and frustrated and kept thinking, 'Why now?'. I've got a family and that's what's supposed to be the most important thing."

Watch his mother, Sharon, talk about the news below: