The objective of this review is to summarize current data obtained so far in catecholamine-essential hypertension(EH)relationships on a genetic basis.As the major elements driving the sympathetic system’s actions,catecholamines modulate a variety of physiological processes and mutations related to the system.This could generate serious disorders,such as severe mental illnesses,stress-induced disorders,or impaired control of blood pressure or motor pathways.EH is idiopathic,and the genetic basis of its causes and substantial interindividual discrepancies in response to different types of treatments are the focus of interest.Susceptibility to disease or efficacy of treatments are thought to reflect genomic variabilities among individuals.Therefore,outlining the available knowledge in functional genetic polymorphisms linked to EH will make the picture clearer and will help to establish future prospects in the field.