Sigmund Freud,
Selected Papers on Hysteria and Other Psychoneuroses
(1912)
“ The intensity of the same (let us say of a nausea) increases the deeper one penetrates into its pathogenic reminiscence; it reaches its height shortly before the latter has been expressed, and suddenly subsides or disappears completely for a while after it has been fully expressed. If through resistance the patient delays the expression, the tension of the sensation of nausea becomes unbearable, and, if the expression cannot be forced, vomiting actually sets in. ”
