One is apt to feel weak, when anything whatever is the matter. This may arise from loss of blood, from excessive fatigue, from continued illness, or from a severe shock to the system from any cause. Either of these may cause depression or prostration, of which the extremest degree is called collapse.

In the beginning of all such affections, the weakness is that of oppression. The organs of the body are clogged, so to speak; skin, kidneys, bowels, etc., are, for the time, hindered in their action, and the loaded blood fails to stimulate aright the various functions,

It is important, in treating debility, to distinguish of what kind it is. Exhaustion, as after long illness, is to be recovered from, with time, under nourishing food, rest, pure air, etc. Depression, or prostration, as from a severe shock, by warmth, rest, and stimulation, according to the nature and degree of the case. Oppression of the organs, at the. onset of a disease, is best relieved by unloading the system with purgative medicines, and those which promote the action of the skin and kidneys; sometimes, in an early stage, by the withdrawal of blood from the arm, or by leeches or cups from a central part.