After five years since the release of her last album, our iconic 2000s skater chick is back. Following her battle with Lyme Disease, Avril Lavigne is making a comeback with her newest single “Head Above Water.”

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After teasing fans with a cryptic photo on Twitter earlier this week, Lavigne announced her first single from her forthcoming album, which was announced earlier this year.  “Head Above Water” will be released Sept. 19.

On her website, Lavigne shared a personal letter with her fans. The punk princess talked about the struggles she has faced with Lyme Disease and vulnerability.

“Thank you for waiting so patiently as I fought through and still continue to fight, the battle of my lifetime,” Lavigne says. “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.”

Lavigne teamed up with We The Kings’ Travis Clark to finish “Head Above Water.” Check out Clark talking about working with Lavigne on her latest project below.

Lavigne also shared that her newest album will not only be a healing record for her, it will also spread awareness about Lyme Disease.

I have decided to be truthful about my struggle, open and more vulnerable than ever before,” Lavigne shares. “And to be honest, part of me doesn’t want to talk about being sick because I want it to all be behind me, but I know I have to. Because not only is it a part of my life, I need to bring awareness to the severity of Lyme Disease.”

You can read the full letter to her fans below.