Werlhof (1699-1767) studied medicine at the University of Helmstedt under Meibohm and Heister, received his doctorate in 1723, was initially a general practitioner in Peine, and from 1720 he practised in Hanover, where he died in 1767. Werlhof was one of the most famous doctors of his time. He was a member of the Royal Society of London, he knew Latin and most European languages. Beside that he wrote poetry and composed. Many of his hymns were sung in churches throughout Germany. In 1735 he described the "Purpura haemorrhagica" or also "Morbus maculosis Werlhofii".