LONDRES - La duchesse de Cambridge, Kate Middleton, a quitté jeudi l'hôpital londonien King Edward VII au bras de son mari, le prince William, après quelques jours d'hospitalisation à cause de fortes nausées matinales liées à sa grossesse.

Elle est apparue souriante à la sortie de l'hôpital, aux côtés du prince William. La duchesse devrait séjourner au palais de Kensington, l'une des résidences de la famille royale à Londres, pour le reste de sa grossesse, a annoncé le cabinet du couple princier. La grossesse de Kate avait été annoncé lundi par le palais royal.

Kate Middleton, âgée de 30 ans, est «au tout début» de sa grossesse et n'a même pas atteint la douzième semaine, a souligné le palais. Elle avait été hospitalisé car elle souffrait d'hyperemesis gravidarum, un trouble dangereux qui provoque chez la femme enceinte de forts vomissements après l'ingestion de liquides et d'aliments.

«Ce n'est pas rare qu'une femme enceinte souffre de nausées matinales, mais quand ces dernières entraînent de la déshydratation, une perte de poids et des vomissements au point de développer des toxines dans le sang, ça devient un problème», explique la docteure Kecia Gaither, directrice du service de prénatalogie à l'École de médecine de l'université de Brookdale, à New York.

Cette maladie touche une femme enceinte sur 50 et se manifeste le plus souvent chez les jeunes femmes, lors de la première grossesse ou de grossesses multiples. Kecia Gaither ajoute que moins de un pour cent des femmes atteintes par cette maladie sont hospitalisées.

Les photos de Kate et William à la sortie de l'hôpital, compilées par nos collèques du HuffPost anglais
Loading Slideshow...
  • Britain's Prince William stand next to his wife Kate, Duchess of Cambridge as she leaves the King Edward VII hospital in central London, Thursday, Dec. 6, 2012. Prince William and his wife Kate are expecting their first child, and the Duchess of Cambridge was admitted to hospital suffering from a severe form of morning sickness in the early stages of her pregnancy. (AP Photo/Alastair Grant)

  • Britain's Prince William stand next to his wife Kate, Duchess of Cambridge as she leaves the King Edward VII hospital in central London, Thursday, Dec. 6, 2012. Prince William and his wife Kate are expecting their first child, and the Duchess of Cambridge was admitted to hospital suffering from a severe form of morning sickness in the early stages of her pregnancy. (AP Photo/Alastair Grant)

  • Britain's Prince William stand next to his wife Kate, Duchess of Cambridge as she leaves the King Edward VII hospital in central London, Thursday, Dec. 6, 2012. Prince William and his wife Kate are expecting their first child, and the Duchess of Cambridge was admitted to hospital suffering from a severe form of morning sickness in the early stages of her pregnancy. (AP Photo/Alastair Grant)

  • Britain's Prince William stand next to his wife Kate, Duchess of Cambridge as she leaves the King Edward VII hospital in central London, Thursday, Dec. 6, 2012. Prince William and his wife Kate are expecting their first child, and the Duchess of Cambridge was admitted to hospital suffering from a severe form of morning sickness in the early stages of her pregnancy. (AP Photo/Alastair Grant)

  • Britain's Prince William stand next to his wife Kate, Duchess of Cambridge as she leaves the King Edward VII hospital in central London, Thursday, Dec. 6, 2012. Prince William and his wife Kate are expecting their first child, and the Duchess of Cambridge was admitted to hospital suffering from a severe form of morning sickness in the early stages of her pregnancy. (AP Photo/Alastair Grant)

  • Britain's Prince William stand next to his wife Kate, Duchess of Cambridge as she leaves the King Edward VII hospital in central London, Thursday, Dec. 6, 2012. Prince William and his wife Kate are expecting their first child, and the Duchess of Cambridge was admitted to hospital suffering from a severe form of morning sickness in the early stages of her pregnancy. (AP Photo/Alastair Grant)

  • Britain's Prince William stands next to his wife Kate, Duchess of Cambridge as she leaves the King Edward VII hospital in central London, Thursday, Dec. 6, 2012. Prince William and his wife Kate are expecting their first child, and the Duchess of Cambridge has been admitted to hospital suffering from a severe form of morning sickness in the early stages of her pregnancy. (AP Photo/Alastair Grant)

  • Britain's Prince William stand next to his wife Kate, Duchess of Cambridge as she leaves the King Edward VII hospital in central London, Thursday, Dec. 6, 2012. Prince William and his wife Kate are expecting their first child, and the Duchess of Cambridge was admitted to hospital suffering from a severe form of morning sickness in the early stages of her pregnancy. (AP Photo/Alastair Grant)

  • Duchess of Cambridge expecting

    Britain's Prince William stands next to his wife Kate, Duchess of Cambridge as she leaves the King Edward VII hospital in central London, Thursday, Dec. 6, 2012. Prince William and his wife Kate are expecting their first child, and the Duchess of Cambridge has been admitted to hospital suffering from a severe form of morning sickness in the early stages of her pregnancy. (AP Photo/Andrew Matthews)

  • Duchess of Cambridge expecting

    The Duke and Duchess of Cambridge leave the King Edward VII hospital in London where the Duchess of Cambridge had been admitted with severe morning sickness.

  • Duchess of Cambridge expecting

    The Duke and Duchess of Cambridge leave the King Edward VII hospital in London where the Duchess of Cambridge had been admitted with severe morning sickness.

  • Duchess of Cambridge expecting

    The Duke and Duchess of Cambridge leave the King Edward VII hospital in London where the Duchess of Cambridge had been admitted with severe morning sickness.

  • Duchess of Cambridge expecting

    The Duke and Duchess of Cambridge leave the King Edward VII hospital in London where the Duchess of Cambridge had been admitted with severe morning sickness.

  • Duchess of Cambridge expecting

    The Duke and Duchess of Cambridge leave the King Edward VII hospital in London where the Duchess of Cambridge had been admitted with severe morning sickness.

  • Duchess of Cambridge expecting

    The Duke of Cambridge arrives at the King Edward VII hospital in London where the Duchess of Cambridge has been admitted with severe morning sickness.

  • Duchess of Cambridge expecting

    General view of step ladders left by photographers outside the King Edward VII hospital in London where the Duchess of Cambridge has been admitted with severe morning sickness.

  • Duchess of Cambridge expecting

    The Duke of Cambridge arrives at the King Edward VII hospital in London where the Duchess of Cambridge has been admitted with severe morning sickness.

  • Duchess of Cambridge expecting

    The Duke of Cambridge enters the King Edward VII hospital in London to visit his wife, the Duchess of Cambridge has been admitted with a severe form of morning sickness.

  • Duchess of Cambridge expecting

    Pippa Middleton leaves the King Edward VII hospital in London after visiting her sister, the Duchess of Cambridge, who was admitted to the hospital on Monday with severe morning sickness.

  • Duchess of Cambridge expecting

    Pippa Middleton leaves the King Edward VII hospital in London after visiting her sister, the Duchess of Cambridge, who was admitted to the hospital on Monday with severe morning sickness.

  • Duchess of Cambridge expecting

    Pippa Middleton leaves the King Edward VII hospital in London after visiting her sister, the Duchess of Cambridge, who was admitted to the hospital on Monday with severe morning sickness.

  • Duchess of Cambridge expecting

    The Duke of Cambridge leaves the King Edward VII hospital in London after visiting his wife, the Duchess of Cambridge, who was admitted to the hospital on Monday with severe morning sickness.

  • Duchess of Cambridge expecting

    The Duke of Cambridge leaves the King Edward VII hospital in London after visiting his wife, the Duchess of Cambridge, who was admitted to the hospital on Monday with severe morning sickness.

  • Duchess of Cambridge expecting

    NOTE ALTERNATE CROP: The Duke of Cambridge leaves the King Edward VII hospital in London after visiting his wife, the Duchess of Cambridge, who was admitted to the hospital on Monday with severe morning sickness.

  • Duchess of Cambridge expecting

    The Duke of Cambridge leaves the King Edward VII hospital in London after visiting his wife, the Duchess of Cambridge, who was admitted to the hospital on Monday with severe morning sickness.

  • Duchess of Cambridge expecting

    James Middleton leaves the King Edward VII hospital in London after visiting his sister, the Duchess of Cambridge, who was admitted to the hospital on Monday with severe morning sickness.

  • Duchess of Cambridge expecting

    Pippa Middleton leaves the King Edward VII hospital in London after visiting her sister, the Duchess of Cambridge, who was admitted to the hospital on Monday with severe morning sickness.

  • Duchess of Cambridge expecting

    The Duke of Cambridge leaving King Edward VII Hospital in central London after visiting his wife, the Duchess of Cambridge, who has been admitted with a severe form of morning sickness.

  • Duchess of Cambridge expecting

    Police officers outside King Edward VII Hospital in central London where the Duchess of Cambridge has been admitted with a severe form of morning sickness.

  • Duchess of Cambridge expecting

    The Duke of Cambridge leaving King Edward VII Hospital in central London after visiting his wife, the Duchess of Cambridge, who has been admitted with a severe form of morning sickness.

  • Duchess of Cambridge expecting

    A no parking sign outside King Edward VII Hospital where the Duchess of Cambridge is being treated for acute morning sickness.

  • Duchess of Cambridge expecting

    A well wisher outside the King Edward VII hospital in London, where The Duchess of Cambridge spent the night with severe morning sickness as the nation celebrates the news that she is pregnant.

  • Duchess of Cambridge expecting

    The Duke of Cambridge leaving King Edward VII Hospital in central London after visiting his wife, the Duchess of Cambridge, who has been admitted with a severe form of morning sickness.

  • Duchess of Cambridge expecting

    The Duke of Cambridge leaving King Edward VII Hospital in central London after visiting his wife, the Duchess of Cambridge, who has been admitted with a severe form of morning sickness.

  • Duchess of Cambridge expecting

    Prince William leaves the King Edward VII hospital in central London where the Duchess of Cambridge has been admitted following the announcement that she is expecting a baby.

  • Duchess of Cambridge expecting

    A general view of King Edward VII Hospital in central London where the Duchess of Cambridge has been admitted following the announcement that she is expecting a baby.

  • Duchess of Cambridge expecting

    A general view of King Edward VII Hospital in central London where the Duchess of Cambridge has been admitted following the announcement that she is expecting a baby.

  • Duchess of Cambridge expecting

    The waiting media outside King Edward VII Hospital in central London where the Duchess of Cambridge has been admitted following the announcement that she is expecting a baby.

  • Duchess of Cambridge expecting

    The waiting media outside King Edward VII Hospital in central London where the Duchess of Cambridge has been admitted following the announcement that she is expecting a baby.