The presence or absence of any disease (bhava– abhava) occurs according to the particular features of etiology, doshhas and dushyas. Body has tendancy to brought Dhatus  to equilibrium is its swabhava, . ‘treatment of disorders’ (chikitsa) is the kriya to help this process. This is the function of a physician. According to Ayurveda, this therapy is administered with the objective that there should not be disequilibrium (hetu) in Dhatus and that there should be promotion of Dhatus which are in equilibrium. By abstaining from the factors causing disequilibrium & pursuing those causing equilibrium, t0he imbalanced once are produced. As the well–equipped physician (chikitsa–prabhrut) leads to production of balanced dhatus by means of balanced factors, this article is focused on the single case study of a psoriasis patient treated using this Siddhant.