, the son of Ozzy and Sharon Osbourne
, has announced his diagnosis with the autoimmune disease multiple sclerosis
.The 26-year-old, whose fiance Lisa Stelly had just given birth
to a new baby, was "angry and frustrated and kept thinking, 'Why now?'" People magazine reported
.According to HELLO!
magazine, Jack was diagnosed with the neurological condition
last month."I keep thinking: 'What did I do wrong? What did I eat or drink when ...