Stage fright is according to our present nomenclature and present-day knowledge, a neurosis belonging to the group of diseases caused by a profession. It may be looked upon as the most classical, sovereign human neurosis. The phenomena of. stage fright demonstrate very well a long series of psycho-vegetative, psycho-organic and psycho-somatic reciprocal effects and correlations. Besides vasomotor, vagotonic and sympatheticotonic relations, serological and humoral alterations, there is also a radical change of matter and various peculiarities of the glandular function associated with this apparently innocuous kind of neurosis which is often treated so lightly. Stage fright as well as other occupational neuroses, oratorical troubles, the “esprit d'escalier”, aphasic disturbances in speaking, stuttering, stammering, etc., which were considered hitherto as “nervous”, “fictitious” functional diseases deprived of an organic basis, cause in every-day life grievous sufferings, and form cultural problems which are too grave to be overlooked.