Kelly Osbourne

Kelly unknowingly was living with Lyme disease for almost a decade after being bitten by a tick at her late father Ozzy Osbourne's birthday party in 2004.

In her memoir, Kelly wrote about her struggle to be diagnosed with Lyme disease.

She wrote "I had started entering my symptoms into online quizzes, and the results kept coming back Lyme disease. I got tested. The results were positive: I had stage III neurological Lyme disease. I was relieved to finally know what was going on, but I was also scared."