Another of Fliess's ideas was the theory of'nasal reflex neurosis '.
2.
Fliess had been treating " nasal reflex neurosis " by cauterizing the inside of the nose under local anesthesia.
3.
Freud had Fliess repeatedly operate on his nose and sinuses to treat " nasal reflex neurosis ", and subsequently referred his patient Emma Eckstein to him.
4.
Freud also showed an interest in the nasal reflex neurosis and in vital periodicity, explored during a significant relationship with Wilhelm Fliess between 1887 and 1902.