Constipation of what should by nature be erupted occurs either from the weakness of the expelling force, or from the power of the retaining force, which clings to the substance to be erupted. This also happens due to the weakness of the digestive power, as a result of which the substance remains for a long time in the container, where natural forces retain it until digestion is completely completed.
This also happens due to the narrowness of the passages and their obstruction, or due to the density or viscosity of the substance, or if it is so abundant that the expelling force is unable to cope with it, or due to the loss of the feeling of the need to expel the substance to be ejected, since force also contributes to emptying will; such a loss occurs with jaundice.
The reason for the delay in evacuation is also that part of the natural force is turned in the other direction, as happens during crises of illness, when there is a strong retention of urine or feces, because the crisis evacuation is carried out in a different way.
When something that should be expelled is retained, various diseases occur. These are either diseases from the area of combination of particles, that is, blockage, relaxation, wet spasms and the like, or diseases of nature, that is, rotting, as well as blocking of innate warmth and its transition to fiery, or the extinction of innate warmth from prolonged or strong blockage, a consequence which is cold, or the predominance of moisture in the body. As for the associated diseases, this is the rupture and opening of blood vessels.
Indigestion is one of the worst causes of disease, especially if it occurs after habitual malnutrition, as happens, for example, from excessive saturation during a bountiful harvest after excessive fasting during a shortage.
As for complex diseases of detention, these are tumors and acne.
The eruption of what must be retained occurs either from the power of the expelling force, or from the weakness of the retaining force, or from the fact that the matter is disturbing either with its heaviness, when it is abundant, or stretched by its wind, or by its burning sharpness and acridity, and also from the fluid of matter, which seems to flow of its own accord and by its impulse causes diarrhea. This is sometimes facilitated by the expansion of the passages, as happens with excessively abundant flow of semen, their splitting along or tearing across, or excessive opening of the mouths, as happens with nosebleeds. Such expansion arises from external or internal causes.
When there is an eruption of that which must be restrained, a cooling of nature results from this, due to the eruption of flammable matter, which feeds the innate heat. But sometimes this results in a warming of the nature, when what is expelled is cold in nature, such as mucus, or close in nature to balance, such as blood. Then a very hot juice takes over, like, say, bile, and warms the nature.
Sometimes from excessive emptying dryness arises - constant and essentially, and sometimes moisture also arises - by analogy with what we said about the generation of heat. This occurs when there is a moderate eruption of drying juice and the innate heat is unable to completely digest the food, as a result of which the amount of mucus increases. However, such moisture is not useful to the innate nature and is not itself innate, just as the warmth mentioned above is not innate. On the contrary, the consequence of any excessive emptying is cold and dryness in the substance and nature of the organs, although in some cases extraneous warmth and substandard moisture are added to them;
Sometimes excessive emptying is followed by a disease of the instruments such as blockage - also due to excessive dryness and blockage of the vessels; Cusaz and spasms also follow.
As for moderate retention and evacuation, corresponding to the time of need for them, they are useful and keep the body in a healthy state.
So, we talked about pathogenic factors, which are obligatory in their kind, although most of their varieties are not obligatory. Let us now take up other reasons.