Paroxysmal tachycardia is a type of arrhythmia characterized by sudden episodes of rapid heart rate that begin and end abruptly. This article provides an overview of the causes, clinical manifestations, diagnostic methods, and treatment options for paroxysmal tachycardia. Special attention is given to its classification, including supraventricular and ventricular types, and the role of electrocardiography in diagnosis. The importance of timely medical intervention and preventive measures is also discussed. This condition is particularly significant due to its potential complications, including heart failure and thromboembolic events, which highlight the necessity for early detection and effective management strategies.