III. DIAGNOSIS
William Heberden, in 1768 gave a detailed description of a peculiar type of chest discomfort suffered by his patients causing him to adopt the term ‘‘angina pectoris.’’ His description was most appropriate.
There is a disorder of the breasts marked with strong and peculiar symptoms, considerable for the kind of danger belonging to it, and not extremely rare which deserves to be mentioned more at length. The site of it, and the sense of strangling and anxiety with which it is attended, may make it not improperly called angina pectoris.
They who are affected with it are seized while they are walking (more especially if it be uphill, and soon after eating) with a painful and most disagreeable sensation in the breasts, which seems as if it were to extinguish life, if it were to increase or continue; but the moment they stand still, all this uneasiness vanishes.
In all other respects, the patients are, at the beginning of this disorder, perfectly well, and in particular have no shortness of breath, from which it is totally different. The pain is sometimes situated in the upper part, sometimes in the middle, sometimes at the bottom of the breastbone, and often more inclined to the left than to the right. It likewise very frequently extends from the breasts to the middle of the left arm.