For it is by the power of Christ that all healing occur and demons are expelled. The saints appeal to this power and manifest it by invoking the Name of Jesus, which is especially effective in combating demons and so can deliver men from insanity:
‘The Name of Jesus can still remove distractions from the minds of men (ekstasis dianoias), and expel demons, and also take away diseases,’ declares Origin, who also tells us: And some give evidence of their having received through this faith a marvellous power by the cures which they perform, invoking no other name over those who need their help than that of the God of all things, and of Jesus, along with a mention of His history. For by these means we too have seen many persons freed from grevious calamities, and from distractions of mind (ekstasis), and madness (mania), and countless other ills.

Mental Disorders & Spiritual Healing: Teachings from the Early Christian East
Jean-Claude Larchet