Irish Boyzone singer Ronan Keating has been devastated since his bandmate Stephen Gatley passed away last month, and has revealed he has suffered from anxiety attacks.

Keating admits he is still struggling to come to terms with his grief and has been left emotionally exhausted by the tragedy.

"I just feel worn out,” he said. “I haven't slept. My brain doesn't work. My heart's broken. You just feel crushed. I've had good days and bad days.

“The bad days are horrible, it’s like the walls are coming in on top of you. Anxiety I think is what they call it.

"I haven't been sleeping at all lately. It's been horrible. We've all been feeling the same way since Stephen passed. Mentally I'm absolutely exhausted.

“There's times when you feel like you can't breathe, you know, when you're panicking and I'm not like that. I've always been on a level."

Keating, whose mother Marie died of cancer in 1998, admits he is even considering having therapy to help him through his grief.

He told Britain’s Observer: “I've never before thought about going to get help with counselors. For the first time ever I think I should.

“When I lost my mum it was the hardest thing at the time I'd ever known in my life but because she was sick for two years and we were told three months before she died that she had three months left, subconsciously you build a wall, your defense mechanism goes up and you prepare yourself for that.

“Whereas with Steo, there was nothing, just this wall of devastation, shock. I don't think it has hit any of us properly.”

Fellow Irish Boyzone star Gately died at the age of 33 from an acute pulmonary edema, a build-up of fluid in the lungs, at his holiday home in Majorca, Spain on October 10.