Just a few days after checking out of a London-area hospital, pregnant Kate Middleton has fallen ill again with another bout of acute morning sickness -- and although the Duchess does not yet require further hospitalization, husband Prince William has cancelled a Sunday Dec. 9 engagement to be by her side at their Kensington Palace home.
"It is well known that Hyperemesis Gravidarum often recurs," a St. James Palace spokesman tells Us Weekly, confirming that William has pulled out of his planned appearance at the British Military Tournament in Earls' Court to be with Kate in their Nottingham Cottage residence at the Palace.
(Known as "HG," the rare condition affects .03 to 1 percent of pregnant women, and is characterized by severe nausea, vomiting, weight loss, dehydration, lightheadedness and fainting.)
Adds the Palace of the 30-year-old Duchess, who announced her pregnancy on Monday Dec. 3: "Until further notice, to allow the Duchess a degree of privacy during her pregnancy, we do not intend to offer regular condition checks or advise of routine developments."
Before his wife's second bout, William, 30, donned a tux on Saturday evening to keep a commitment to attend the Winter Whites Gala at London's Royal Albert Hall, where he commented on his wife's health woes.
"I don't know why they call it morning sickness -- they should call it all day and all night sickness," the prince joked to former Centrepoint chairman Michael O'Higgins. "[Recovery is] a long old process but she is getting there. She feels like it is going to go on forever.”
This article originally appeared on Usmagazine.com: Pregnant Kate Middleton Suffers Another Bout of Acute Morning Sickness, Prince William Cancels Event