The symbol of medicines history
The symbol of medicine; staff & serpent
The symbol of medical science is a single serpent coiled around a staff. It is known as The Rod of Asclepius, the name derives from Asclepius, the son of Apollo, who is the god of medicine and healing in ancient Greek mythology.
He was often depicted with the rod and serpent.
Some historians suggest the symbol depicts a tapeworm coiled around a staff. Tapeworms and other parasitic worms were common in those days and removed from the body by coiling them around a stick. It is possible that doctors used this symbol to advertise this particular service.
Source: Bonniers World History, nr 7, 2007 [ Världens historia nr 7 2007].