Unlike clinical research, neurophysiological testing has higheraccuracy and sensitivity in revealing neurogenic defects responsiblefor the orofacial pain and sensory disturbance. This reseachwas aimed at studying neurophysiologicl aspects of the atypicalfacial pain. The disorder turns out to have such specific traits asbrainstem structure disfunction which occurs as higher brainstemstructure sensibility, with the trigeminal system being involvedduring autonomic disorders. The mutimodal evoked potentialpotentials (auditory evoked potentials, Sympathetic SkinResponse and trigeminal evoked potentials) research is recommendedfor differencial diagnostics for different kinds of the facialpain, verifying predominate pathogenic mechanisms, definingtreatment course and treatment efficiency estimation.