This term is applied to the condition which usually follows severe injury of any sort. It. also frequently follows severe surgical operations. The patient generally becomes cold and complains of faintness. There is general tremor, pulse is small, speech and thought are confused, there is little or no appetite, perhaps nausea and vomiting, and there may be involuntary discharges from the bladder and bowels. A shock is generally followed by reaction, in which the patient has more or less fever according to the intensity of the shock.

Hot bricks or bottles should be applied about the patient. If the injured part is painful, it should be soothed by hot applications. The hands and feet, and the whole surface of the body, should be rubbed until warm. Hot drinks of some kind should be given. Great harm may be done by the free use of stimulants, as is quite customary in these cases. By their employment the reaction, or fever, which follows may be greatly increased.