This Subject deals with the Basic & Fundamental Principles of Siddha system of medicine. It is based upon the 96 basic concepts called & 96 Thathuvangal & , with a detailed description of the Philosophical knowledge gifted by Siddhars, the Spiritual Scientists. The Department at RVS Siddha Medical college and Hospital, provides an indepth knowledge right from the History of the Universe & evolution of the human race, the History of Tamil Nadu and of Siddhars, Scientific changes with which the world revolves & the physical and psychological discipline to triumph these changes