This document discusses several systemic conditions including diabetes mellitus, hypertension, and obesity. It defines each condition and covers classification, pathogenesis, clinical features, aims of management, measurement methods, causes and associated conditions, and impact on quality of life. Diabetes is classified into type 1 and 2 and is characterized by chronic hyperglycemia. Hypertension is defined based on systolic and diastolic blood pressure levels and is primarily or secondarily caused. Obesity is characterized by excess body fat and is measured using BMI, waist-hip ratio, and other methods. Each condition can impact quality of life.