DJ Havana Brown says she's been struggling with anxiety in the "I'm a Celebrity" jungle.

Image: I’m A Celebrity Get Me Out of Here/Channel 10

You’d think the ‘Tucker Trials’ requiring contestants to eat things like animal rectum and fried pig’s blood would be the toughest part of I’m A Celebrity… Get Me Out of Here, but Havana Brown is facing an even bigger challenge.

On last night’s episode, the DJ told her fellow campmates that she’d been experiencing anxiety in the jungle.

“I just started feeling really anxious. Just feeling a bit trapped, you know? Just feel like I need to get out,” she said.

“I’ve been able to deal with it for a long time but all of a sudden it’s just like ‘boom’.”

Part of the problem was not expecting to be in the jungle for so long.

“You know, today I was like, ‘I don’t know how I’ve lasted this long without feeling like this.’ It just hit me. And I was just like … I can’t breathe. I just mentally hadn’t prepared for this long,” she told friend Laurina.

Watch: Mia Freedman on how she deals with her anxiety. Post continues after video.)

Brown has been living with anxiety since she was eight years old, although she didn’t know exactly what it was at the time.

“I used to say my best friends when I was staying over at their house… ‘Don’t you have those butterflies scratching at your tummy?’ and they were like ‘No’, and I realise now that was anxiety from a very young age,” she said.

This confusion led to a scary ordeal when she experienced her first panic attack.

"At 12 years old I had a panic attack. I thought I was dying. It's scary that young," she admitted.

Like many anxiety sufferers, including Lena Dunham, Kourtney Kardashian and even Mamamia's Mia Freedman, Brown relied on staying active to help manage her disorder.

"The only way to get rid of it was exercise...I used to do bikram yoga and stuff like that and it just felt like it released so much stuff inside," she said. (Post continues after gallery.)

Fellow celebs were quick to support and reassure Brown, with Laurina Fleure taking her for a walk for some time away at camp and Shane Warne and Brendan Fevola offering a sympathetic ear.

"Shane and Brendan are top guys. As soon as I mentioned I was feeling anxious, they made me feel better straight away with conversation and mentally you need almost a distraction," she said in the diary room.

"Maybe if I keep feeling anxiety there, I'm just going to have to do something because it's not healthy."

How do you manage your anxiety?