De dolore disputatio medica

XXVI.
But if it is weighed as a mixture, it is gifted with form and qualities: of which some are called primary, some secondary.

XXVII.
With respect to form, it is either infected with putrefaction, or free from it.

XXIIX.
By primary qualities: hotter, colder, more humid, more dry.

XXIX.
By secondary: because it is harder, thicker, thinner.

XXX.
But if it is a mixture, and in a place: it exists from some acting principle: which is indeed morbid, and is either in the affected part, or outside it.

XXXI.
But if it is detained in the afflicted place where it was generated: this happens because of the affect weakening or impeding the faculty itself: or because of something extraneous.

XXXII.
External causes are either necessary or not necessary.

XXXIII.
If the air is hotter or colder: if foods are copious, [if there is] an abundance of aromatics, [if there is] the use of potent wine: bodily motion, especially from food, or otherwise impure: medicines, and whatever can cut, rupture, break, bruise, or compress, are counted among their number.

XXXIV.
If external causes have preceded and stirred up the pain: it will be easily known from the report of the sick person or those assisting.