Neuromodulation of Lidocaine Cream Effect on Chronic Pain Patients

Exclusion Criteria

• •Specific causes of back pain (e.g., cancer, fractures, spinal stenosis, infections).
• •Complicated back problems (e.g., prior back surgery, medicolegal issues).
• •The intent to undergo surgery during the time of involvement in the study.
• •History of cardiac, respiratory, or nervous system disease that, in the investigator's judgment, precludes participation in the study because of a heightened potential for adverse outcome. For example: asthma, claustrophobia, epilepsy or acute eczema under the electrodes.
• •Presence of any contraindications to MRI scanning. For example: cardiac pacemaker, metal implants, claustrophobia, pregnancy, cannot lie still in an fMRI scanner.
• •History of medical or psychiatric illness.
• •History of substance / alcohol abuse or dependence.