The Indriya Sth na of Caraka Samhit is an Authentic, Scientific and relevant ptopDe a, and hence no intelligent person should question its significance. It is very important to understand the Prak ti and Vik ti before studying the Ari a. Though all the Ari a Lak a s given in Indriya Sth na can not be examined by the modern parameters, still they are found in the patients and are quite significant. More the number of Ari a in a person the more is the Nityatva (certainty) of Ari a, therefore chances of fatality are more in cases with more number of Ari a. The group of Ari a Lak a s, related to...