The singer – who first shared her struggles with the debilitating disease in an exclusive PEOPLE cover story in April – opened up to Good Morning America‘s Jesse Palmer Monday, breaking down in tears while recalling doctors’ misdiagnoses.
“I was in Los Angeles, and it was literally the worst time of my life,” Lavigne, 30, said about her frustrating medical appointments. “I was seeing every specialist, and literally like the top doctors … It was so stupid. They would pull up their computer and be like, ‘Chronic fatigue syndrome’ or ‘Why don’t you try to get out of bed, Avril, and just go play the piano?’ or ‘Are you depressed?’ ”
“This is what they do to a lot of people that have Lyme disease. They don’t have an answer for them, so they tell them … ‘You’re crazy.’ ”
About two months into experiencing her symptoms, Lavigne did some research herself before finding a Lyme disease specialist.
The singer is still going through treatment and expects to make a full recovery. “I’m doing a lot better; seeing a lot of progress,” said Lavigne, whose new single, ”Fly,” benefits the Special Olympics. “I’m just really grateful to know that I will make a 100 percent recovery.”