Salient aspects of environment prorated the geogenic conditions that give rise to the dispersal of certain diseases in specific areas and hence their importance in the present work. The southern uplands of Rajasthan having a lateral transition from sem-arid to sub-humid environment with a variety of landforms necessitates a brief discussion on its various environmental aspects like relief, geomorphology, climate, drainage, and vegetation which affect the morbidity pattern of the various diseases. Delimitation of the study area in terms of environmental characteristics is also significant in the present context.

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Keywords: Geogenic Conditions, Lateral Transition, Sub-Humid Environment, Geomorphology.