Book 2
2
But the modes are three; for it is brought up either from rupture of a vessel, or from erosion, or from rarefaction. Rupture, then, takes place suddenly, either from a blow, straining at a load, or lifting a weight upward, or a leap from a height, or from bawling aloud, from violent passion, or some other similar cause, when blood is instantly poured forth from the vessel in great quantity.
2
But if it proceed from erosion, the patient is to be interrogated if he ever had a cough before, or was affected with dyspnœa, and whether nausea or vomiting ever afflicted him previously. For from such chronic affections the vessels are corroded by a continued, copious, and acrid defluxion. When, therefore, the containing vessels, having been long wasted and attenuated, at length give way, they pour forth blood.
