Skin diseases are one among the most common of all human health afflictions and affect almost 900 million people in the World ¹.  Kitibha kushta is one among the kshudra kushta as per Charaka ² and Sushruta³ affecting the Tridosha, Rasa, Rakta, Mamsa and Lasika, characterized by Shyava Varna, Kinakhara Sparsha, Parushya⁴, Ruksha Pidaka  and Ati-ugra Kandu⁵. From contemparary science Kitibha Kushta is analogous to psoriasis. Psoriasis is an immune mediated diseases associated with comorbidities⁶, 1.3% - 34.7% of individuals with psoriasis develop chronic, inflammatory psoriatic arthritis leading to joint deformity and disability ⁷. The prevalence of this disease is increasing day by day, at present the prevalence of psoriasis in India varies between 0.44% - 2.8% ⁸.  According to global psoriasis atlas (GPA) an estimated 3.59 million people in India and 125 million people Worldwide are affected by psoriasis ⁹. As per WHO the reported prevalence of psoriasis in countries ranges between 0.9% ¹⁰ -11.3%¹¹and is considered the psoriasis as a global burden. Patients with this disease are more prone to face physical, emotional and socio-economical stigma in the society and have a significantly higher suicidal ideation¹².

         Ahara, Nidra and Brahmacharya are described as Traya-Upastambas in Ayurveda ¹³. Ahara has been given more importance and considered as eminent factor¹. Viruddha Ahara is unwholesome diet, that vitiates the Dosha and Rasadi Dhatus¹⁵. It is one of the potent causative factor for many mild to chronic diseases including Kushta¹⁶. Samyoga Viruddha Ahara is one among them¹⁷, which is a combination incompatibility of food. This Samyoga may be between two or more food substances¹⁸.When a person consumes diet which is Samyoga Viruddha, then it provokes the Doshas after very short time period where as other types of Viruddha Aharas require long period of Abhyasa to aggravate the Doshas¹⁹. Food- food interaction is a serious issue requiring much attention to prevent its possible harmful effects ²⁰. In present study an attempt will be made to assess the role of Samyoga Viruddha Ahara in Kitibha Kushta.