Avril Lavigne has rubbished rumours that she is in rehab.

The Sk8er Boi singer sparked fears when she recently revealed online that she was struggling with “health issues”, but she has now assured fans that her problems aren’t to do with addiction.

The rumours were sparked earlier in December when Avril – who is married to Nickelback frontman Chad Kroeger – opened up in a private message to a fan named @AvrilMusicChart on Twitter.

She said: “I feel bad because I haven’t been able to say anything to the fans to let them no why I’ve been absent. I’m torn as I’m quite private. I’m not feeling well. I’m having some health issues. So please keep me in your prayers.”

The fan later posted a message wishing her well, and although the singer replied to say “Thank you”, she didn’t elaborate.

In her latest message Avril, 30, also opted not to explain her health troubles.