The thesis is devoted to clinical psychopathological, clinical psychophenomenological, medico-psychological, neurophysiologic features and principles of differential diagnostics and ambulatory psychotherapy for modern forms of somatoform disorders. Unmatched and polymorphic psychopathologic expressions of neurotic register, which cannot reach the syndrome-based level, prevail in the clinical background of modern forms of somatoform disorders; if the existing clinical pathognomy is close to the syndrome-based organization, then it turns out interfacing the somatic (somatosensory) expressions (the very fact of this interfacing differs somatoform disorders from the "field-typical" somatic dis-eases). The somatoform disorders patients turned out to have the predominance of psycho-pathological syndromes of asthenic spectrum with hypochondriac or vexatious depressively phobic arrangement, somatosensory follow-up and hysteroid impregnation. It is characteristic of somatoform disorders patients that they elaborate active coping strategies with simultaneous psychotic-specialized-doctors-directed compliance abruption. Differential diagnostics of somatoform disorders must include obligatory psychoanam-nestic data research aimed at the revelation of specific psychophenomenological, clinic-psychological, pathopersonological and syndrome-based nosological markers. The essential features of the clinical pathomorphism of modern somatoform disorders forms include: clinical pathognomy blurring, comorbidity with various somatic diseases of the "specific" organ or system, clinical presentation dissociativity, torpidity towards medi-cated therapy, clinical presentation "psychologization" and "socialization", high level of experience intornization ("somatoform disorders psychosomatization"), extranosological behavior modifications, high frequency of aggravation-pensional mindsets. In ambulatory-polyclinical practice one should apply the adapted psychotherapeutic di-agnosis: only the syndrome-based clinic-diagnostic part with pathopersonological exten-sion reduction and accent on aetiopathogenetic extension, a limited range of clinical psy-chotherapeutic effect-syndromes in psychotechnical part, pharmacotherapeutical back-ground indication only. The developed principles of somatoform disorders ambulatory psychotherapy (and psycho-logical correction) include: consistency, relative step-by-step approach, variety of psycho-therapeutic and psychocorrectional influences, dominations of short-term forms, training with autopsychotherapeutic elements predomination, supporting psychotherapy, course approach. The developed system of ambulatory psychotherapy includes frame circumstances, ba-sis psychotherapeutic method (of reasonable, neurodynamic and behavioral paradigms), integrated psychotherapeutic elements (of mnestological and psychodynamic paradigms), autogenous modus of psychotherapeutic measures. Key words: somatoform disorders disorders, clinic, pathomorphism, psychopathologi-cal syndromes, clinical psychotherapeutic effect-syndromes, psychotherapeutic diagnosis, ambulatory psychotherapy.
