Pilot Study of the Efficacy and Safety of Lidoderm Patch in the Treatment of Low Back Pain

Exclusion Criteria

• •1. Had a history of greater than one back surgery, or one back surgery within 3 months of study entry
• •2. Had severe spinal stenosis
• •3. Had chronic back pain of \>12 months duration with an undefined spinal diagnosis
• •4. Had radicular symptoms with radiation into the thigh or below (i.e., knee, calf, foot, etc.)
• •5. Had received an epidural steroid/local anesthetic injection within 2 weeks prior to study entry
• •6. Had received trigger point injections within 2 weeks prior to study entry
• •7. Had received Botulinum Toxin Injections for LBP within 3 months prior to study entry
• •8. Were taking a lidocaine-containing product that could not be discontinued while receiving study medication
• •9. Were taking class 1 anti-arrhythmic drugs (e.g., mexiletine, tocainide)
• •10. Had received Lidoderm for LBP in the past