Neglect or indulgence is an etiological factor of the first importance, as we have already seen.
In the second place, it is possible that the etiological factor is alcohol.
The one etiological group then becomes split up into two which may be designated as the dispositional and the definitive groups.
The influence of this as an etiological factor in derangement of digestion can scarcely be exaggerated.
In respect to food and indigestion as etiological factors there are several points requiring more explicit statement.
As an etiological factor certain morbid mental states rank first, as we have seen, in the order of importance.
Various rheumatic and nervous disorders are not infrequently associated with it, and are doubtless of etiological significance.
This briefly covers the whole ground of the etiological relations of the disease.
A microbacillus has been found by several observers, and credited with etiological influence.
In other words, dysentery is only a clinical, and is in no way an etiological, expression of a disease.