Ketu in Vedic Astrology
He rules intestinal worms, smallpox, cholera and other epidemics. He generally causes the same diseases as Rahu.
Caste : Low caste
Direction : South West
Malefics always tend to do harm but under certain conditions, the intensity of the mischief is tempered. Benefics on the other hand tend to do good, but some times they also become capable of doing harm.