There can hardly be any doubt that this is a case of hysteria. The long duration of the illness and the lack of alteration in the syndrome… point to a deep-seated paralysis of psychic energy and a complete subjugation of the personality by the illness.
Jung’s case analysis directly links the hysterical symptom to a deep paralysis of psychic energy and personality subjugation, integrating association-experiment data with clinical observation of the symptom’s chronicity.
, Experimental Researches, 1904thesis