The rod of Asclepius ( sometimes also spelled Asklepios or Aesculapius), also known as the asklepian, is an ancient symbol associated with astrology, the Greek god Asclepius, and with medicine and healing. It consists of a serpent entwined around a staff. The name of the symbol derives from its early and widespread association with Asclepius, the son of Apollo, who was a practitioner of medicine in ancient Greek mythology. His attributes, the snake and the staff, sometimes depicted separately in antiquity, are combined in this symbol.The Rod of Asclepius also represents the constellation Ophiuchus (or Ophiuchus Serpentarius), considered by some to be the thirteenth sign of the sidereal zodiac. Hippocrates himself was a worshipper of Asclepius.