Cardiovascular
c. 1550 BCE — Ancient Egypt, Ebers Papyrus
For much of recorded history, physicians lacked the tools to detect or define what later generations would call hypertension, and the condition was interpreted through the lens of humoral imbalance, excess blood, or nervous agitation. The development of instruments capable of measuring arterial pressure in the nineteenth and early twentieth centuries fundamentally transformed how the medical community conceptualized the relationship between blood force and disease. What had once been an invisible, nameless condition gradually acquired both a name and a contested clinical identity over the course of roughly two centuries.
Historical Narrative
Ancient Egyptian physicians recorded observations about the pulse and heart as far back as 1550 BCE in the Ebers Papyrus, describing a 'hardness of the heart' and irregular pulse sensations that some historians have interpreted as early, imprecise encounters with cardiovascular strain. Greek physicians, most prominently those working within the Hippocratic tradition, attributed variations in pulse quality to imbalances among the four humors — blood, phlegm, yellow bile, and black bile — and vigorous or bounding pulses were thought to indicate an excess of blood requiring correction through dietary modification or phlebotomy. Galen of Pergamon, writing in the second century CE, elaborated extensively on pulse theory, categorizing dozens of pulse types and ascribing therapeutic meaning to each, though his framework had no precise concept equivalent to sustained elevated arterial pressure as a distinct pathological state.
Throughout the medieval period, both Islamic and European physicians preserved and expanded Galenic pulse doctrine. Ibn Sina, known in the Latin West as Avicenna, devoted substantial sections of his Canon of Medicine to pulse classification, describing tense and hard pulses in ways that retrospectively echo hypertensive presentations, though he understood these findings within humoral and pneumatic frameworks rather than mechanical ones. Bloodletting remained a dominant response to states of perceived vascular excess across these centuries, practiced with confidence that removing surplus blood would restore equilibrium.
The pivotal conceptual shift began with William Harvey's 1628 demonstration that blood circulated continuously through the body under the force of the heart's contraction. Harvey's work reframed the heart and vessels as a mechanical pump system, laying intellectual groundwork that would eventually make the measurement of pressure within that system conceivable. Stephen Hales took that next step in 1733, inserting a brass tube into the artery of a horse and measuring how high blood rose in a glass column — the first recorded direct measurement of blood pressure in an animal. Hales's experiment was remarkable but brutal, and it offered no practical clinical pathway for human medicine at the time.
Decades passed before instrumentation caught up with the conceptual need. Karl von Vierordt developed an early sphygmograph in the 1850s, and Étienne-Jules Marey refined it further, producing devices that could trace pulse waveforms on paper. These instruments recorded pulse character rather than numerical pressure values, and clinicians interpreted their outputs in narrative rather than quantitative terms. The landmark advance came in 1896 when Scipione Riva-Rocci introduced a practical arm-cuff device — the sphygmomanometer — that allowed physicians to estimate systolic pressure non-invasively using mercury. Nikolai Korotkoff's 1905 description of the arterial sounds heard through a stethoscope during cuff deflation completed the technique, enabling measurement of both systolic and diastolic values.
Even after measurement became possible, physicians debated whether elevated readings represented disease or merely a necessary physiological adaptation. Theodore Janeway conducted early statistical studies in the first decade of the twentieth century linking sustained high readings to organ changes and shortened life expectancy. Insurance industry mortality data in the 1920s and 1930s reinforced this association. For a substantial period, however, some clinicians held that elevated pressure in older patients was benign or even beneficial, and the medical community remained divided on whether asymptomatic elevation warranted intervention. It was not until large-scale epidemiological work in the mid-twentieth century that a consensus began forming around sustained elevation as a condition warranting medical attention in its own right.
Key Historical Figures
Historical narrative only — this page describes how Hypertension was understood historically. It is not medical advice and does not describe current diagnosis or treatment. Sourced from verified medical history references (NIH, Encyclopaedia Britannica, and standard medical history texts). See our medical disclaimer.