Polycythemia is a condition in which there is an increase RBC count. It can be a physiological compensation or a pathological disorder. This video will explain the different types of polcythemia, its causes, and treatment options. Timeline 0:00 Introduction 0:15 Polycythemia vera definition 0:20 Ranges of blood cells during polycythemia 0:34 Types of polycythemia 1:04 Relative polycythemia 1:37 Secondary polycythemia 1:53 Tissue hypoxia 2:24 Raised plasma factors 2:53 Primary polycythemia 3:27 Incidence of disease 3:49 Clinical presentation 5:23 WHO criteria for polycythemia 6:18 Treatment for polycythemia