The Backstreet Boys singer – who has previously been treated for depression, anxiety and excessive consumption of alcohol – voluntarily checked himself into a treatment clinic on Monday (10.01.11) after realising he needed help, but insisted it would not affect the group.
In a statement he said: "For personal reasons, I've checked myself into a rehab clinic. With 2011 being a busy year for Backstreet, I want to be healthy and perform and sing for people at my very best and happiest.
“None of this will affect our current tour plans and I look forward to seeing everyone really soon! Thank you for all of your support and respecting my family and friends privacy during this time."
A.J. – real name Alexander James – has previously dropped hints he was struggling with alcohol issues, writing on his twitter account @skulleerozon on Sunday (09.01.11): “Thank u all for my bday wishes and tweets:)! Its gonna be a great year! I love u all and wish me luck! I start my sober journey tomm! Ttfn! (sic)”
He added in a post on Monday: “Hey all wish me luck! This is gonna be an amazing year for me and all around me! I love u all and appreciate all the love and support.
“See u on the other side!(sic)”
A.J’s bandmates – Brian Littrell, Nick Carter and Howie Dorough – tweeted their support for him, saying: “we love and support our brother @skulleeroz. We are proud of him and thank all of our fans for the support. We love u!”
Backstreet Boys are currently planning a summer 2011 tour with New Kids on the Block.