Britain's Queen Elizabeth has accepted medical advice to rest for the next few days and has cancelled a planned visit to Northern Ireland, Buckingham Palace said on Wednesday.
"The queen has reluctantly accepted medical advice to rest for the next few days," the Palace said.
"Her Majesty is in good spirits and is disappointed that she will no longer be able to visit Northern Ireland, where she had been due to undertake a series of engagements today and tomorrow."
The queen sent her "warmest good wishes to the people of Northern Ireland, and looks forward to visiting in the future," the Palace said.
The decision comes just days after the queen was seen using a walking stick at a major public event when attending a Westminster Abbey service marking the centenary of the Royal British Legion, an armed forces charity.
She had previously been photographed using a cane in 2003, but that was after she underwent knee surgery.
