Objectives: The objective of this study is to review the diagnostic methods of neurologic symptoms by non-organic causes. Methods: We experienced a case of a motor and sensory disturbance patient without abnormal findings in the diagnostic tests. Using this process, we became aware that it is important to remember some of the methods when treating patients who are suspicious of neurologic symptoms by non-organic causes. Results: First, we should perform a variety of diagnostic tests to exclude

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... he organic causes. Second, we should persistently observe a consistency of the patient's symptoms and attitude. Finally, we should perform a neurological examination in order to acquire the objective physical findings. Conclusions: Because there are limitations in the methods above, we have to be aware of making a mistake regarding the disability by organic causes as that by non-organic causes.