fãs Tweet Support After Avril Lavigne Reveals She Has An Undisclosed Health Issue 

Never miss a thing with the HuffPost Entertainment newsletter!

Newsletter may include personalized content. Learn more.

You are using an outdated browser. Please upgrade your browser or activate Google Chrome Frame to improve your experience.

Here\'s What The Most Controversial \'GoT\' Season 5 Scene Could Be

Joan Rivers Leaves Millions To Charity, Family And Staff

11 Things You Didn\'t Know About Your Favorite Christmas Movies

Watch The Terrifying First Trailer For \'San Andreas\'

Christmas Just Came Early For \'Harry Potter\' Fans

Olivia Wilde Goes Paddleboarding In A Little Black Bikini

Taylor Swift Was The Real Angel At The Victoria\'s Secret Fashion Show

Sam Smith Just Made The World\'s Saddest Christmas Song Even Sadder

Christopher Lee Sings Heavy Metal Christmas Songs

Jennifer Lopez Slays In Slit Skirt And Gladiator Boots

Kim Kardashian Snaps Bathroom Selfies During Date Night

Taylor Swift Addresses Karlie Kloss \'Kissing\' Photos With Some Attitude

Fans have started a #Pray4Avril hashtag after Avril Lavigne revealed on Sunday that she is suffering from an undisclosed health issue. During a direct-message exchange on Twitter, Lavigne told a fan with the Twitter handle @AvrilMusicChart that she "is not feeling well" and is "having some health issues." A

rep for Lavigne confirmed to Billboard the authenticity of the conversation and denied rumors that the singer is pregnant, but did not disclose further details about the illness.

— Avril Lavigne Charts (@AvrilMusicChart) December 9, 2014

The 30-year-old singer responded publicly to the same Twitter account on Sunday, tweeting a simple "thank you" after the fan wished for her recovery:

Avril Lavigne battling undisclosed illness, asks for \'prayers ...

Avril Lavigne Hints at Undisclosed Health Issue on Twitter | Billboard

Avril Lavigne Asks Fans To #PrayForAvril While Suffering From ...

Use this form to alert a HuffPost editor about a factual or typographical error in this story.