Medical Science: Updates and Prospects Vol. 12

Hypertension in childhood and adolescence has shifted from a rare condition, previously presumed to be secondary to renal or vascular disease, to a common and frequently primary disorder that tracks into adult life and confers measurable cardiovascular risk before the third decade. This critical review synthesises contemporary evidence on paediatric hypertension, addressing global and regional prevalence trends; the evolution of diagnostic thresholds and guideline frameworks; the pathophysiological convergence of obesity, sympathetic overactivity and renal sodium handling; modifiable lifestyle determinants; subclinical and overt target-organ injury; the unresolved controversy surrounding population screening; and current lifestyle and pharmacological management. Particular attention is given to the discordance between professional bodies regarding the value of routine blood pressure measurement in asymptomatic children, the implications of the lower diagnostic thresholds introduced in 2017, and the accumulating longitudinal evidence linking childhood blood pressure elevation to adult cardiovascular events. The review highlights persistent gaps in outcome-based intervention trials, the underrepresentation of low- and middle-income populations in the evidence base, and the emerging but still immature role of risk-prediction modelling. Recognising and managing elevated blood pressure during childhood is presented as an underused opportunity for primordial and primary cardiovascular prevention across the life course.