Multiple sclerosis: Jack Osbourne and other celebrities with the disease
"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," Osbourne says.
Osbourne was diagnosed just two weeks after the birth of his first child, Pearl Clementine, with fiancée Lisa Stelly.
Interestingly, Ozzy was also once diagnosed with MS in 1992 -- he even announced his retirement and played a farewell tour. But six months later, the Osbournes learned that it was a misdiagnosis.
Other celebrities with multiple sclerosis:
Montel Williams (born July 3, 1956) - former talk show host
David "Squiggy" Lander (June 22, 1947) - actor, comedian and musician
Jonathan Katz (Dec. 1, 1946) - comedian and actor
Clive Burr (March 8, 1957) - drummer for heavy metal band Iron Maiden
Richard Pryor (Dec. 1, 1940 - Dec. 10, 2005) - comedian, actor and writer
William Hartnell (Jan. 8, 1908 - April 23, 1975) - first actor to play the lead role in the series "Doctor Who"
Annette Funicello (Oct. 22, 1942) - actress and singer
Victoria Williams (Dec. 23, 1958) - singer and songwriter
Joan Didion (Dec. 5, 1934) - writer
Lena Horne (June 30, 1917 - May 9, 2010) - actress, singer and civil rights activist
Teri Garr (Dec. 11, 1947) - actress
Chrissy Amphlett (Oct. 25, 1959) - lead singer with the Divinyls
Neil Cavuto (Sept. 22, 1958) - anchor for FOX News
Richard Cohen (Feb. 14, 1948) - journalist and husband of Meredith Viera
Alan Osmond (June 22, 1949) - singer in the Osmond Brothers
Ann Romney (April 16, 1949) - Mitt Romney's wife
Michaele Salahi (Oct. 1, 1965) - "The Real Housewives of D.C." star