This section of the book is from the "Household Companion: The Family Doctor" book
These may be stated together, thus: as causes which are
Hereditary: examples (though not always inherited), consumption, gout, epilepsy, cancer.
Functional: that is, depending upon the action, either too great or too little, of one or more of the organs, or of the body generally. Examples: over-exertion, over-excitement, loss of sleep; or, on the other hand, want of exercise.
Mechanical: as wounds or injuries of various kinds, tight-lacing, etc.
Conditional: as extremes of heat or cold, sudden changes of temperature, dampness of dwellings.
Digestive: as poisoning, unwholesome food, intemperance, abuse of medicine; and, on the other hand, starvation.
Obstructive: as neglect of the bowels, uncleanliness of the skin, ill ventilation.
Contagious: as small-pox, itch, hydro phobia.
Atmospheric: as autumnal fevers, yellow fever, cholera.