This section is from the book "A Treatise On Therapeutics, And Pharmacology Or Materia Medica Vol1", by George B. Wood. Also available from Amazon: Part 1 and Part 2.
When palsy attacks hysterical women, and can be referred to no precise origin, it is considered usually as entitled to this designation. It is characterized by retaining the electro-muscular contractility, but is generally attended with diminished sensibility of the muscle. It will generally yield to electricity; though, in some rare instances, it resists this, as all other remedies. Under such circumstances however, it is probably something more than merely hysterical. The faradisation should be applied to every organ affected, and the application continued for some time after recovery. In consequence of the great nervous excitability of the patient, it is best to commence very lightly, spending the first sitting in doing little more than accustoming the patient to the manipulations; and gradually increasing as she is found to tolerate the remedy. The diminished sensibility of the muscles renders rapid intermissions of the current necessary; but watchfulness must be observed, lest a little too much local disturbance should bring on an attack of hysteria. The remedy should be directed as well to the nervous trunk as to the parts affected. Sometimes it may be sufficient to stimulate the cutaneous sensibility; but this is more painful, and will not often be submitted to.