The author reports the case of a young man's hysteria, which shows a biphas
ic conversion symptomatology. In this case the biphasicness of the symptom
formation can be differentiated from the biphasic symptom formation of the
obsessional neurosis, for which Freud (1916/17, S. 311) once reserved this
special feature of symptom configuration. In the present case it is not the
defence mechanism of undoing which leads to the periodic change of the sym
ptomatology, but the different symptoms (psychogenic paraparalysis and psyc
hogenic fits) present symbolically the bivalence of the oedipal relations,
the libidinous relation to the mother on the one hand and the aggressive re
lation to the father on the other hand. Only the dissociation of the relati
ons to mother and Father, connected in the oedipal triangle before, enable
this biphasic symptomatology. This dissociation results from the exceptiona
l feature of the patients's passive-feminine character formation, in the co
urse of which process the oedipal relationship to the father is partly regr
essing into the anal stage and is thus removed from the oedipal triangle.