Sweating sickness, a disease of unknown cause that appeared in England as an epidemic on five occasions in 1485, 1508, 1517, 1528, and 1551. It was confined to England, except in 1528–29, when it spread to the European continent, appearing in Hamburg and passing northward to Scandinavia and
Prince Arthur was the heir to the English throne until his unexpected death made his brother King Henry VIII and changed the course of European history. Here's what caused his death.