Buckingham Palace said: “The King was this morning admitted to a London hospital for scheduled treatment. His Majesty would like to thank all those who have sent their good wishes over the past week and is delighted to learn that his diagnosis is having a positive impact on public health awareness.”

NHS England said that since Charles shared his diagnosis, the “enlarged prostate” page on the NHS website received 26,170 visits in the 48 hours following the announcement.

This compares with a daily average of 1,400 visits earlier in the week. Prostate Cancer UK has also seen a big rise in the number of people using its online risk checker.

The King’s condition, also known as benign prostatic hyperplasia (BPH), is very common in men over the age of 50 as one in three will likely end up having symptoms of an enlarged prostate.

These include the need to visit the toilet more frequently, with more urgency, and difficulty emptying the bladder.

Whilst the condition is not cancer, patients will still need to have several tests to rule out the possibility they have another illness with similar symptoms, such as prostate cancer, according to the NHS.

Surgery is usually only recommended for moderate to severe symptoms that have not responded to medicine

Treatment can include a number of procedures, including removing part of the prostate gland with a laser, water ablation using the pressure of the water to destroy prostate tissue, or urethral lift implants, which hold the enlarged prostate away from the urethra so it is not blocked.

Other options include a prostate artery embolisation, during which tiny plastic particles are injected into blood vessels to shrink the prostate gland by reducing its blood supply.