The paroxysm

The paroxysm is suddenly developing attack of illness, a sudden increase in symptoms of the disease.
A characteristic example of the hysteria is the so-called paroxysmal tachycardia.

The paroxysm (from the Greek. paroxysmos - irritation, acute attack of illness) - suddenly developing attack of severe pain or other symptoms, sudden intensification of symptoms of disease, the rapid display of any emotions (such as anger, frustration). A characteristic example of this pathological condition is the so-called paroxysmal tachycardia (see Arrhythmias), in which the patient has a heart defect, which is in relatively good condition, without any apparent cause, suddenly develops a sharp attack tachycardia (see). An attack can last from several minutes to several days, and often ends as abruptly as it had begun.