Please select the eligibility criteria that correspond to the clinical trial below.
Title: Clinical Characterization of Burst Spinal Cord Stimulation for Chronic Pain Management
Brief Summary: Recently a new form of spinal cord stimulation therapy called burst spinal cord stimulation (Burst-SCS) is available to treat chronic pain. The goal of this study is to learn more about how Burst-SCS works to reduce chronic pain. The study will examine chronic pain patients who have been deemed candidates for Burst-SCS therapy, and who have already been selected to receive a temporary externalized trial of Burst-SCS from their own doctors as part of their standard clinical care for chronic pain management. During the study, participants will be asked to complete a variety of evaluations at certain time points. In addition, there will be a randomized, double blind, crossover phase, where the particular effects of Burst-SCS and sham SCS will be evaluated. The device used to deliver Burst-SCS and sham SCS is the St. Jude Medical Invisible Trial System.


Options:
A: Inclusion Criteria:

* Has chronic refractory pain associated with one of the conditions currently approved for spinal cord stimulation as follows: Failed Back Syndrome, Degenerative Disk Disease (DDD), Herniated Disk pain refractory to conservative and surgical interventions, Peripheral Causalgia, Complex Regional Pain Syndrome (CRPS) or Reflex Sympathetic Dystrophy (RSD).
* Primary pain in the lower half of the body.

Exclusion Criteria:

* Requires, or will in the future, diathermy treatments.
* Had implanted spinal cord stimulation system within the last six months.
B: Inclusion Criteria:

* SCS candidate with the Specify 5-6-5 surgical lead
* Has FBSS and does not require further surgery (defined as persistent or recurrent low back and leg pain of at least 6 months duration following at least one decompression and/or fusion procedure)
* Average low back pain is ≥ 5 as assessed by the baseline NPRS
* Average low back pain is greater than leg pain
* Subject has persistent moderate to severe low back and leg pain despite other treatments

Exclusion Criteria:

* Treated with SCS, subcutaneous or peripheral nerve stimulation, an intrathecal drug delivery system, requires back surgery at the location related to his/her original back pain complaint or experimental therapies
* Most recent back surgery \< 6 months ago
* Low back pain only (no leg pain)
* Investigator suspects substance abuse that might confound the study results
* Radiographic evidence of instability requiring fusion
* Pain relieved completely by lying down
* Life expectancy of \< 24 months
* Subject is pregnant or planning to become pregnant during the course of the study
* Subject is unable to undergo study assessments or complete questionnaires independently
C: Inclusion Criteria:

* Men or women with chronic, intractable pain of the trunk and/or limbs, including unilateral or bilateral pain associated with any of the following: failed back surgery syndrome and intractable low back and leg pain, and for whom Burst-SCS has been recommended as a treatment option
* Candidates who can speak, read, and understand English

Exclusion Criteria:

* Subjects who are pregnant- as determined by verbal report or chart review
* Subjects with current, habitual, or previous use within the last 12 months of artificial nails, nail enhancements, or nail extensions that cover any portion of either thumbnail. Exceptions, including brief and/or occasional use, may be permissible at the discretion of the principal investigator
* Subjects who are unable or unwilling to cooperate with clinical testing
* Subjects having any impairment, activity or situation that, in the judgement of the study coordinator or PI, would prevent satisfactory completion of the study protocol
D: Inclusion Criteria:

* Neuropathic pain \> 6 months
* Pain intensity ≥ 5 according to NRS (for neuropathic pain component to be treated with SCS)
* Known cause of the pain
* Neuroanatomical correlation to the pain
* ≥50% of the painful area is to be treated with SCS
* The patient has a physical and psychological health status that allows the patient to participate in physiotherapy and undergo SCS implantation.

Exclusion Criteria:

* Not able to undergo SCS implantation
* Inadequate knowledge of the Swedish language
* Alcohol or substance abuse
* Severe untreated psychiatric disorders including psychiatric disease and/or psychological conditions which are the primary determinant to the patient's pain condition
* Incapacitating pain conditions of other causes than neuropathic pain
* Pregnancy
* Insufficient compliance
* Malignant disease with short expected survival

Answer: C