Avril Lavigne was “in bed for f***ing two years” whilst fighting Lyme disease

Speaking to Billboard magazine, she said: “I was in bed for f***ing two years. It’s a bug - a spirochete - so you take these antibiotics, and they start killing it. But it’s a smart bug: It morphs into a cystic form, so you have to take other antibiotics at the same time.

It went undiagnosed for so long that I was kind of f***ed.”

Avril, 34, revealed she first went to doctors about her health when she was left feeling “achy and fatigued”, but multiple health care professionals were unable to find a cure after having misdiagnosed her.

She says a friend then told her she could have Lyme disease, which prompted her to put a phone call in to former ‘Real Housewives of Beverly Hills’ star Yolanda Hadid - who has been open about her own battle with the disease, which her daughter Bella Hadid also has - who gave her the number for a specialist to help her get treated.

Previously, Avril claimed she had “accepted death” when she was bedridden with the disease, and her new single 'Head Above Water' - which was released last month - was written during that time.

She wrote in a note on her website: "I spent the last few years at home sick fighting Lyme Disease. Those were the worst years of my life as I went through both physical and emotional battles...

"Thank you for waiting so patiently as I fought through and still continue to fight, the battle of my lifetime. The first song I am choosing to release is called 'Head Above Water'.

"It is also the first song I wrote from my bed during one of the scariest moments of my life. I had accepted death and could feel my body shutting down. I felt like I was drowning. Like I was going under water and I just needed to come up for air. Like I was in a river being pulled in a current. Unable to breathe."