1. A method for using high intensity focused ultrasound (HIFU) to provide therapy to a treatment site corresponding to a portion of a nervous system of a patient, the treatment site being spaced apart from a HIFU therapy device, comprising the steps of: (a) determining an appropriate treatment site associated with the nervous system of the patient to be treated to achieve a desired non-permanent therapeutic effect; (b) selecting a dose of HIFU required to achieve the desired non-permanent therapeutic effect; (c) positioning the HIFU therapy device such that a focal point of the HIFU therapy device is disposed adjacent to the treatment site; (d) verifying that the focal point of the HIFU therapy device is properly positioned relative to the treatment site, and if not, repositioning the HIFU therapy device until the HIFU therapy device is properly positioned relative to the treatment site; and (e) energizing the HIFU therapy device to provide the dose of HIFU required to achieve the desired non-permanent therapeutic effect.