Subject who received the enough study information and signed informed consent form.
Subject who had chronic pain with accompanying radiating pain to the superior limb beyond
the elbow.
Subject is male or female patient ≧20 years old. Subject who reported neck pain with
accompanying radiating pain to superior limb (12 weeks or greater in duration at Visit 0).
Subject who is refractory to previous analgesics for 12 weeks and more. Subject who is able
and willing to complete all study related assessment tools and complied with scheduled
clinic visits and clinical study procedures.
Subject whose pain NRS ≧5 and PRSIS ≧1 at baseline (based on recall over the past week).
Subject who, in the opinion of the investigator, was not likely to complete the trial for
whatever reason.
Subject who was treated with Pregabalin within the past 12 weeks (on baseline). Subject who
has been regularly treated cervical pain with nerve blocks (such as stellate ganglion
block, epidural block, radicular block and trigger point injection etc.).