The conceptualization of Yakkai ilakkanam (bio-types) according to tri-humoural forces is strongly emphasized in Siddha system of medicine. Based on this fundamental principle of Muththaadu (3 vital life forces i.e. Vali, Azhal and Aiya udal), 9 types of body constitutions are classified. The Objective of this case series is to assess the most common bio-type of Systemic Hypertensive patients and to interpret the association of Yakkai ilakanam to history and control of BP. A standard questionnaire for YI is procured from repository consisting of total of 30 questions. 50 patients with history of hypertension are included in this study. YI of Hypertensive patients are assessed along with 2 demographic data and a questionnaire for assessing the prognosis of hypertension. The study is carried out after obtaining informed consent and confidentiality is maintained throughout the study. After assessing the individuals, the most prone bio-type for Systemic hypertension is discussed. The results are interpreted in association with the history of Hypertension categorically, i.e. 1-6 months, <6 months-2 years, 3-5 years, 6-10 years, >10 years. The Patients’ whose blood pressures are under control (Consecutive 2 visits), not under control and their respective YI are discussed. The data are entered into SPSS and results are pictorially depicted. This study is a primitive descriptive study which helps us in understanding the body constitution of Hypertensive patients. This study concluded that the most common yaakai ilakanam among hypertensive patients are vaathapitham (42%) which can be considered as the most prone body constitution for hypertension.This study could be further carried out on a large scale. A follow-up study could be done as a cohort to assess the impact of the disease itself in Yakkai ilakanam

Yaakai ilakkanam, Systemic hypertension, Raththa kothippu noi, Case series, Body constitution

This case series concluded that the most common yaakai ilakanam among hypertensive patients are vaathapitham (42%) which can be considered as the most prone body constitution for hypertension. Furthermore, pithavaatham (18%) and pithakabha thegi (24%) are also present in considerable percentage among the total sample population. The yaakai ilakanam of hypertensive patients seem to have effect on the control of their BP. Moreover, studies on yaakai ilakanam and their association with various risk factors will strengthen the path to individual medicine.

Preyadarsheni K. and Manoharan A. (2023). A Case Series on Yakkai Ilakkanam (Body Constitution) in Systemic Hypertension (Raththa Kothippu NOI). Biological Forum – An International Journal, 15(3a): 06-10