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CRISIS (from *p/vuv, to decide), in medicine ; a point in a disease, at which a decided change for the better or the worse takes place. The crisis is most strongly ri&rked in the case of acute diseases, and with strong patients, particularly if the course of the disease is not checked by energetic treatment. At the approach of a crisis, the disease appears to take a more violent character, and the disturbance of the system reaches the highest point. If the change is for the better, the violent symptoms cease with a copious perspiration, or some other discharge from the system. In cases where the discharge may have been too violent, and the nobler organs have been greatly deranged, or where the constitution is too weak to resist the disease, the patient's condition becomes worse. In regular fevers, the crisis takes place on regular days, which are called critical days (the 7th, 14th and 21st); sometimes, however, a little sooner or later, according to the climate and the constitution of the patient. A bad turn often produces a crisis somewhat sooner. When the turn is favorable, the crisis frequently occurs a little later. After a salutary crisis, the patient feels himself relieved, and ,the dangerous symptoms cease.It hardly need be mentioned, that the word crisis is figuratively used for a decisive point in any important affair or business, for instance, in politics.