KATE MIDDLETON has pulled out of attending the Royal Film Performance of The Hobbit tomorrow night because of her ongoing pregnancy sickness, St James's Palace has announced.
The Duchess spent three nights at the King Edward VII Hospital in London last week being treated for hyperemesis gravidarum, which can lead to dehydration and weight loss.
Although she was discharged last Thursday, her condition worsened on Sunday while she was recuperating at Kensington Palace, forcing the Duke of Cambridge to cancel a planned evening engagement to remain by her side.
Her decision to miss the film premiere does not come as a surprise, as experts in the condition said she would continue to feel unwell for several weeks.
A spokesman for St James's Palace said: "The Duchess of Cambridge will not attend The Hobbit Premiere tomorrow evening and will continue to rest privately."
Yesterday Caitlin Dean, a trustee of the charity Pregnancy Sickness Support, said the Duchess's deterioration was not unexpected, and a further stay in hospital is "quite likely".
Mrs Dean said: "People call it morning sickness and think women have bouts of hyperemesis, but it's there all the time, all day every day, and it's just a case of whether the condition can be managed sufficiently keep women out of hospital.
"It tends to be a cycle of going into hospital, getting rehydrated, going home, getting dehydrated again because you're not getting intravenous fluids, and so on. The Duchess is still very ill by most people's standards and the chances of her going back to hospital are quite high."
Mrs Dean, who suffered from hyperemesis with all three of her pregnancies, said the Duchess should "lie still in a dark room and just take it a day at a time, at the end of each day you know that's a day you don't have to do again".
She added that the Duchess should tell her staff and family not to wear perfume and not to eat garlic, as the smell of either can bring on nausea, and added: "She is not going to be completely better by 12 weeks. It's a very slow progression and she may feel a lot better by the time she gets to 17 or 18 weeks, but it could carry on much longer than that."
The Duchess is not yet 12 weeks pregnant, and hyperemesis is most common in the first three months of pregnancy.
Despite feeling worse on Sunday, the Duchess has not required further hospital treatment and is continuing her recovery at home.
Gordon Rayner Telegraph.co.uk