INTRODUCTION Low back pain have become an urgent problem recently. Four out of five people already have or will experience backaches during their life span, for 10% of them this pain will become chronic. Due to its great spread and treatment, health institutions experience dramatic losses for backache diagnostics and morbidity. Together with financial losses related to patient incapacity to work, his/her care, sickness benefits, etc. the expenditure becomes enormous. Thus back pain are no longer considered a medical or a social problem, but it is regarded a complex bio- psycho-social issue in today’s community. The medical part of this issue remains very important. Solving the back pain problem, significant is the knowledge of fundamental neuro- and skeleton anatomy, pain neurophysiology and neurochemistry; in the clinical practice closely related are the basics of neurology, pain medicine, orthopedics, rehabilitation and other disciplines. Consequently, it is not simple for a medicine practitioner to find the right diagnostic direction or to choose the right treatment. The most complicated issues in the back pain clinical practice are neurological syndromes (neuropathic, neurogenic). These are related with nerve structure back radicular, dorsal ganglion or the damage of nerve branches. These syndromes make up to 10% of all backaches and are generally called radicular pain syndromes. There often emerges hyper-diagnostics or sometimes the syndromes are ignored completely... [to full text]