Britain under rule of a mentally diseased King George III reigned Britain for almost sixty years. He is remembered for getting mad. It is almost impossible to believe that one of the most powerful kingdoms in the whole world was about to lose its great power because of its King illness. At that time, the best doctors determined that the King was going mad. Everybody seemed to be on alert because of his mental disease but not for good reasons; they were trying to take advantage of it. Needles is to say that this is the reason why he was known as the “mad” King. King George was the ruler of Great Britain and Ireland from 1760 until his death in 1820. He was remembered for losing thirteen colonies and he was the third Hanoverian monarch and the first one to be born in England and to use English as his first language. He was a loving husband and father but very strict; he wanted his children to be disciplined. Despite this, his eldest son disgusted the king; he went to parties, drank in excess and gambling. In fact, they disliked each other. The king referred to his son as the fat, and he ridiculed his father. King George´s disease was, later known, called Porphyria. This disease causes a lot of pain, aches, blue urine and mental disorders. At the beginning of his disease and without finding a logical explanation for his behaviour doctors isolated him, treating him as an insane man. He was forced to wear a straitjacket and to obey the doctor's orders. Despite his illness, George III was a dedicated and diligent king and won the respect of his politicians. In fact, when his illness drove him off the political scene, people realised how much they needed him. Although he was ill, he continued to reign Great Britain and Ireland. His behaviour was very criticized by his eldest son, who was a traitor as well as some members of the Parliament. King George's eldest son pushed him into a public breakdown so that he could become Regent. Time went by and he could recover successfully. His illness was stabled and, this allowed him to rule England for many more years. He became very popular and loved by people of Great Britain. He ruled as long as his illness allowed him to do. All in all, he also became famous and well known as The Mad King.