A disease, which was a swelling of the lymph nodes often caused by tuberculosis, that was also called the 'King's Evil'. It was believed that a monarch could cure it by touching the afflicted person. The belief was common throughout the Middle Ages and lasted until the Enlightenment.
Fact of the Day
Robert Plot, Professor of Chemistry at Oxford, devised a cunning plan to enable James II to permanently rid the country of parliaments: he advised James to found a hermetic college for the alchemical creation of gold, thus making the need for parliamentary subsidies redundant.