Jack Osbourne Talks Multiple Sclerosis Diagnosis

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Jack Osbourne says it's been a struggle dealing with the reality that he has multiple sclerosis.

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The 26-year-old former star of The Osbournes, the early-aughts precursor to The Kardashians co-starring parents Ozzy and Sharon and sister Kelly, welcomed his first child, daughter Pearl, with fiancee Lisa Stelly in April.

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

Multiple sclerosis, an autoimmune disease that affects the the brain and spinal cord, is commonly diagosed between the ages of 20 and 40. Symptoms range from minor to severe, and include muscle spasms and weakness, loss of vision and speech impairment.

According to Hello! magazine (via the BBC), the diagnosis came after Osbourne lost 60 percent vision in his right eye earlier this year.

He said his anger has given way to a feeling that he must "adapt and overcome." Meanwhile, Sharon Osbourne wondered whether she was to blame.

"I kept thinking: 'What did I do wrong, what did I eat or drink when I was pregnant?' I feel like it's somehow my fault," she said.

As for Ozzy Osbourne, he responded: "If it was me, you'd think: 'Ozzy had a reputation and it caught up with him,' but Jack is such a good guy."

Osbourne rose to fame on his MTV reality show, which won an Emmy Award in 2002 and ran from that year until 2005, and has since gone behind the camera as the producer of a 2011 documentary about his famous rocker dad, called God Bless Ozzy Osbourne.