The crisis is a turning point in the course of the disease, accompanied by a sharp fall in body temperature, critical end fever (see). The crisis is typical for infectious diseases in which temperature rise occurs quickly. Sometimes the crisis precedes the temperature increases above the level established at the height of the disease and the deterioration of the patient. The duration of the crisis from 5-6 hours. to 2-4 days.
Fast, for 5-8 hours, the temperature drop is often seen with malaria, typhus, recurrent fever, lobar pneumonia.
Sometimes critical temperature drop, and improving the condition is temporary, then develop symptoms of the disease (pseudocyesis, or false crisis).
Clinically crisis is characterized by slow pulse, decreased respiratory rate and blood pressure, increased sweating, and weakness of the patient at improving health. Temperature reduction is associated with a rapid expansion of peripheral vessels, resulting in greatly increases heat dissipation. In some cases expansion of the vessels is so severe drop in blood pressure and circulatory problems that can occur collapse (see). Therefore, before the expected crisis or early critical period patient requires particularly careful care and constant monitoring of his condition, pulse, blood pressure; cancel antipyretics. With the development of collapse hold the therapy.