... Theses de pleuritide

VII.
Those humors, however, are sometimes collected spontaneously and gradually in the pleura, and sometimes are carried into it through the veins either from the whole body or from certain parts, such as the head, the liver, the uterus, etc.; whether they have been attracted by heat or pain, or have been received on account of the weakness of the membrane: either natural, because the principal parts, expelling from themselves that which is superfluous, are themselves stronger by nature: or preternatural beyond nature, which it acquired either from the principles of generation or after birth from some violent cause.

IIX.
Therefore, the sanguineous or bilious humors, having been collected or carried in any way at all into the pleura and ribs, when they break the continuity and produce pain, then, having fallen outside the vessels, they gradually conceive putrefaction, from which fever follows, and because of the proximity to the heart, a fever is kindled.

IX.
The mediate internal causes are: advanced age, which is tempted by pleurisy more easily than youth or childhood; the male sex more than the female; furthermore, those who have a denser body habit, a narrower and weaker chest, rancid eructation belching, a more constricted bowel, suppressed customary evacuation of blood, or an obstructed or hotter liver, are most especially prone to this disease.

X.
Among external causes are listed the winter and autumn seasons most especially; northern and southern constitutions; northern regions; many foods and those of good juice, as well as hot and bilious ones. More potent drinks, likewise colder ones. Excessive exercise, especially running; immoderate idleness. Vomiting, blows, falls, etc.

XI.
Pleurisy lodges either in the membrane or in the muscles continuous with it, sometimes in the right side, sometimes in the left, or even in both. A "bastard" notha pleurisy, however, resides in the exterior muscles of the thorax. One is sanguineous, another bilious: some are again phlegmatic, some melancholic, although, as has been said, these latter two differences are very rarely seen; it is said that one has internal causes, another external.