Brückmann J U, Hennemann U, Payk T R
Pharmakopsychiatr Neuropsychopharmakol. 1978 May;11(3):147-53. doi: 10.1055/s-0028-1094573.
30 patients suffering from therapy-resistant chronic pain were divided into three groups according to drive and mood: I. psychomotor inhibition combined with depressive mood, II. agitation and depressive mood, III. agitation combined normal mood. The psychopharmacological treatment of pain showed sufficient results, when the drugs were directed to the target symptoms "agitation", "lack of drive", and "depression". The differentiated administration of activating or sedative antidepressants and neuroleptics caused reduction or absence of pain while the routine administration of neuroleptics (i.e. chlorpromazine) was less effective.