Jvarasura

Jvarasura is a fever inducing demon. according to legends he is said to have been born from the sweat of medidating Lord Shiva. In one account it is mentioned that Vishnu was afflicted with fever by Jvarasura when he was in his Hayagriva form. Hayagriva tears down Jvarasura into three parts by his Sudarshana Chakra.  The three torn parts developed its own libs. Brahma resurrects him from death. The form has three heads and three legs. Jvarasura is the spouse of Sithala Devi. Insome accounts he is called as servant of Sithala Devi.

In another account Jvarasura is fever demon who is born out of sweat of Lord Shiva and  causes infections among humans. Shitala means the cool one. Shitala devi is a folk deity and incarnation of Goddess Durga (Katyayani). Jvarasura spreads fever to childhood friends of Katyayani . Katyayani cured her friends illness and sent one of her confidant friend Batuk to enounter Jvarasura. Batuk encounters Jvarasura and fiersome battle ensues between them. Jvarasura kills batuk whose body mystically turns into a dust. Jvarasura is happy that he has vanquished Batuk but unknowing to him Batuk undertakes a fiersome form and coloured as dark as rainclouds, three eyed wearing a garland of skulls and clad in tiger skin. Batuk has assumed the terrible Kala Bhairavar form  and a battle ensues followed which Jvarasura learns his mistake and begs Kala Bhairavar to have mercy on him and kala bhairav finishes him off with his weapon trident. Jvarasura is resurrected who later agrees to serve Katyayani.

 Katyayani assumes the form of Sithala devi to cure the people affilicted by various diseases. Sithala Devi is Quadra armed goddess one of her hands hold a broom, another one has a winnowing fan, one hand holds a kamandalu which holds the holy Ganga water for purifying the diseeased one. She  rides on a donkey .