There are numerous theories formulated to explain hysteria; some are ingenious, especially that of Janet, but none is convincing. Convulsions, tremors, paralyses of various forms and degrees are common in hysteria. In major hysteria the patient falls into a convulsion gently. There is checked breathing, up to apparent danger of suffocation. Then follows a furious convulsion, even with bloody froth at the mouth, but there is a trace of wilfulness or purpose in the movements. Next may come a stage of opisthotonos, where the body is bent back in a rigid arch till the patient rests on her heels and head only, and this is followed by relaxation and recurrence of the contortions. An ecstatic phase succeeds this, at times in the so-called crucifix position, with outbursts of various emotions, and a final regaining of a {238} normal state. Any of these stages, however, may constitute the whole fit. In minor hysteria there is commonly a sensation of a rising ball in the throat (the _globus hystericus_). There may be uncontrollable laughter or weeping. Muscular rigidity is frequently found. The patient, especially if she is a child, may mimic dogs and other animals. The snarling, biting, and barking of false hydrophobia are hysterical; these symptoms do not occur in real hydrophobia. There are almost innumerable physical symptoms of the disease, which are chiefly of medical interest, but the mental phases are such as to involve questions of morality. The hysterical character is marked by an overmastering desire to be an object of general sympathy, admiration, or interest, rather than by a tendency to baser indulgence. The will is weak, the emotions explosive, the patient is impulsive and lacking in self-control. She is a "giggler," who goes from absurd laughter into floods of tears. The desire for sympathy and attention makes the patient exaggerate her symptoms or simulate diseases and conditions that do not exist in her case. Hysterics will swallow pins or stick them into their flesh to force attention. Sometimes the simulation of disease is not willed. If there are a number of hysterical girls in a hospital ward and one develops, say, a peculiar paralysis, within two or three hours every hysterical woman in the room will have the same paralysis,--not pretended, but real, although temporary. It must be remembered that the disease, with all its perversity, is as much a fact as pneumonia, and the element of sham is only one of its symptoms. Some authorities go so far as to hold that a woman who will not lie is not hysterical. They invent most extraordinary slanders against even their own immediate family, and it is never prudent to believe an accusation made by an hysterical patient, no matter how plausible the story. Acquired hysteria in many cases may be cured, but the congenital condition is practically hopeless, yet the latter kind may be kept from violent outbreaks.