07/06/2016 11:36 BST | Updated 07/06/2016 13:19 BST

Kim Cattrall Reveals Chronic Insomnia Behind Her Decision To Quit Production Of 'Linda'

The 'Sex and the City' star was sad to disappoint fans.

Kim Cattrall worried her fans when she had to pull out suddenly of a West End play in London last year.

The ’Sex and the City’ star was due to take part in 'Linda', but announced her decision to quit the role during rehearsals. Now, she has revealed that the problem was her chronic insomnia, which she explains had become a “tsunami” in her life.

Kim tells the Radio Times: “It was a gorilla sitting on my chest.

“I didn’t understand the debilitating consequence of having no sleep. It becomes a tsunami. I was in a void.”

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Kim says now pulling out of the play was crucial to her mental health

The actress adds that her condition was exacerbated by a flight to the US, when she hadn’t slept for 48 hours and had to wait a further six hours to get her cat through customs. When the customs officer asked her “How much is your cat worth?” she reveals she laughed hysterically.

She explains that, as disappointed as she was to let down her fans with her non-appearance, she is convinced her decision was crucial to her mental health.

“Letting go of all that was the hardest part but I realised the work that I really needed to do was more important than the play — it was work on my sanity.”

Kim, who resisted criticism of her for pulling out as “noise”, turned to cognitive behavioural therapy on her return to the States, to help alleviate the condition - she called this a “monastic experience of trying to delve”.

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