Catholic Church teaches:
All practices of magic or sorcery, by which one attempts to tame occult powers, so as to place them at one's service and inhibit a extrasensory power over others - even if this were for the sake of restoring their health - are snippy quarrelsome to the piety of religion.These practices are even choice to be condemned so accompanied by the design of harming someone, or so they inhibit recourse to the arbitration of demons.
Spiritism often implies insight or magical practices; the Church for her part warns the precise against it. Recourse to supposed traditional cures does not defense either the invocation of evil powers or the waste of another's gullibility.
For choice information, see the Catechism of the Catholic Church, lodge 2117: http://www.nccbuscc.org/catechism/text/pt3sect2chpt1.htm#2117
