United Kingdom, June 16 -- Kerry Katona has been left unable to move at times because of her chronic pain.

The former Atomic Kitten singer has opened up on her ongoing health struggles, and admitted her "body has just completely shut down" recently as she tries to manage her condition.

She wrote in her latest column for new! magazine: "I'll be honest, I'm still feeling pretty crap at the moment.

"I live with chronic pain and have for years now but there's been more than one occasion recently where my body has just completely shut down, I've not been able to move."

The 45-year-old star acknowledged that she's been "overdoing it" lately, but she's still scared by the way her body is coping.

She added: "I knew I'm overdoing it and not m...