"It wasn't exactly the way she imagined spending her 30th birthday. When Avril Lavigne went to Las Vegas with a couple girlfriends last October to celebrate the milestone, she felt like doing anything but partying – in fact, she'd been feeling terrible for several months, but the doctors she'd seen couldn't pinpoint exactly what was wrong with her. "I could barely eat, and when we went to the pool, I had to leave and go lie in bed," she tells PEOPLE in this week's exclusive cover story. "My friends asked, 'What's wrong?' I didn't know." Shortly after, following months of feeling lethargic and lightheaded, the normally energetic singer got her diagnosis: she had a severe case of Lyme disease. "I had no idea a bug bite could do this," says Lavigne, who believes she was bit by a tick sometime last spring. "I was bedridden for five months." More at the source. Wasn't sure if I was allowed to copy and paste the entire thing. http://www.people.com/article/avril-lavigne-lyme-disease-bedridden Seems like she's on the up now! I wonder what her treatment regime was/is..