Anatreth: According to the Testament of Solomon, Anatreth is a demon of disease. He is associated with the thirty-six decans of the zodiac. He torments humanity with pains in the belly, making it seem as if a person's entrails are being burnt and torn asunder. As with all of the zodiac demons named in the Testament of Solomon, Anatreth can be driven away with certain holy names. For this particular demon, the names Arara and Charara will cause him to flee.
Source : Dictionary of Demons by Michelle Belanger