King Charles sleeps in an OXYGEN TENT to combat sinus issues and struggles with short-term memory, royal biographer claims

King Charles has an ‘appalling memory’ and sleeps in an oxygen tent to combat sinus problems, a new royal biography has claimed.

The book, My Mother and I by Ingrid Seward, claims that His Majesty remedies his worsening memory by writing down his thoughts onto notes which he keeps in his breast pocket.

While the King, 75, has a great knowledge of history, it is his short-term memory that is believed to be troublesome, with Charles alleged to have said that his ‘memory is appalling’.

Seward, Editor-in-Chief of Majesty Magazine, also wrote that the King ‘has no sympathy for trivial ailments and combats his own sinus problems by sleeping in an oxygen tent.’

While the King, 75, (pictured earlier this month) has a great knowledge of history, it is his short-term memory that is believed to be troublesome, with Charles alleged to have said that his ‘memory is appalling’

The book, My Mother and I by Ingrid Seward (pictured), claims that His Majesty remedies his worsening memory by writing down his thoughts onto notes which he keeps in his breast pocket

The book, My Mother and I by Ingrid Seward (pictured), claims that His Majesty remedies his worsening memory by writing down his thoughts onto notes which he keeps in his breast pocket 

Written prior to the King’s diagnosis with cancer earlier this month, Seward detailed Charles’s childhood health problems while at Cheam, his first boarding school.

She said that Charles was frequently ill as a child, prone to catching colds and had his tonsils removed when he was eight years old.

At school Charles is described by Seward as ‘uncoordinated and overweight’ and that he ‘was unsuited to the regime of cold showers and freezing dormitories’.

It was a trip to Australia at the age of 17 that encouraged a love of sport in the King, such as polo and skiing, which later earned him his ‘action man’ nickname.

The King is currently receiving a schedule of regular treatment for cancer which was identified during a procedure for a benign enlarged prostate, but is unrelated.

Buckingham Palace announced the diagnosis on February 5 in a statement and said His Majesty had ‘commenced a schedule of regular treatments, during which time he has been advised by doctors to postpone public-facing duties. 

‘Throughout this period, His Majesty will continue to undertake State business and official paperwork as usual.’

The King was said to have informed both of his sons, Prince William and Prince Harry, of his diagnosis. 

Written prior to the King's diagnosis with cancer earlier this month, Seward (pictured) detailed Charles's childhood health problems while at Cheam, his first boarding school

Written prior to the King’s diagnosis with cancer earlier this month, Seward (pictured) detailed Charles’s childhood health problems while at Cheam, his first boarding school

Prince Harry, 39, travelled to Britain soon after the announcement but is reported to have only spent around 45 minutes talking with his father.

He has since told Good Morning America that he ‘loved his family’. 

The Duke added that he has more trips to the UK planned and that he will try to ‘stop and see family as much as I can’.

On February 10, the King broke his silence for the first time since the announcement and sent his heartfelt thanks for the messages of support he had received from the public.

His Majesty said how he was ‘heartened’ to hear his experience is inspiring others up and down the country to get themselves checked.