A dictionary definition of this term says, it is "a systematic use of personal influence, especially that of the physician, in treatment of nervous diseases." In this definition may be found a good and sufficient reason for the success of some practitioners of medicine and apparently unaccountable failure of others. Nor is failure or success attributable to the specific materia medica remedies made use of by the physician in attendance upon the sick.
The influence of the mind over the body in conditions of health as well as of disease is always paramount. In a consideration of this influence, it is desirable that we remember the prime subdivisions indicated by the will, intellect and emotions. Together, these constitute and are the faculties of the mind. In health they are in a state of equilibrium. In sickness the balance is disturbed. The will becomes weakened, as shown by an increased pliability
CULBERTSON JC. PSYCHIC THERAPEUTICS.. JAMA. 1901;XXXVI(10):627-629. doi:10.1001/jama.1901.52470100019001f