Kate Middleton faces worse bouts of morning sickness

The Duchess of Cambridge, Kate Middleton, could face worse sickness during her second pregnancy than her first, experts said.

Kate is being treated by doctors at Kensington Palace for hyperemesis gravidarum, a rare condition which brings about severe vomiting during pregnancy.

It is the same illness which saw her treated in hospital in December 2012 for three nights while pregnant with Prince George.