Please select the eligibility criteria that correspond to the clinical trial below.
Title: Spinal Cord Stimulation System in the Treatment of Chronic Pain
Brief Summary: The purpose of this study is to evaluate the efficacy and safety of spinal cord stimulation (SCS) using the PINS spinal cord stimulator device for chronic and intractable pain.


Options:
A: Inclusion Criteria:

1. Have been diagnosed with chronic, intractable pain of the trunk and/or limbs which has been refractory to conservative therapy for a minimum of 3 months.
2. VAS ≥ 5
3. Be 18 years of age or older at the time of enrollment
4. Be willing and able to comply with study-related requirements, procedures, and visits
5. Be willing and capable of giving informed consent

Exclusion Criteria:

1. Pregnancy or potential for with unwillingness to use contraception
2. Have a current diagnosis of a coagulation disorder, bleeding diathesis
3. Have evidence of psychiatric or cognitive disorder, who are unable to cooperate with surgery and program control
4. Have a life expectancy of less than 1 year
5. Have a condition currently requiring or likely to require the use of diathermy
6. Other inappropriate situations determined by the researcher
B: Inclusion Criteria:

* At least 18 years old at the time of informed consent
* Willing and able to provide a signed and dated informed consent
* Capable of comprehending and consenting in English
* Willing and able to comply with all study procedures, study visits, and be available for the duration of the study
* On a stable dose (no new, discontinued or changes in) of all prescribed pain medications and willing/able to maintain or only decrease the dose of all prescribed pain medications
* Tried appropriate conventional medical management for their pain
* Not indicated for additional surgical treatment in the opinion of the referring physician or spinal surgeon
* Undergone previous spinal surgery
* Diagnosed with FBSS with appropriate pain score
* Primary pain at appropriate spinal level

Exclusion Criteria:

* Has an active implanted device, whether turned on or off
* Displays current signs of a systemic infection
* Pregnant or lactating, inadequate birth control, or the possibility of pregnancy during the study
* Has untreated major psychiatric comorbidity
* Has serious drug-related behavioral issues
* Has neurological abnormalities unrelated to Failed Back Surgery Syndrome
* Diagnosed with Raynaud disease
* Diagnosed with Fibromyalgia
* Has any active malignancy or has been diagnosed with cancer and has not been in remission for at least 1 year prior to screening
* Has secondary gains which, in the opinion of the investigator, are likely to interfere with the study
* Participating or planning to participate in another clinical trial
* Has characteristics/limits of household or close contacts involved in study (eg, family member already a study participant where blind could be broken)
C: 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.
D: Inclusion Criteria:

* signed informed consent
* treated with spinal cord stimulation
* stable pain relief achieved

Exclusion Criteria:

* failure to give informed consent
* unable to use or understand how to handle the equipment, PGIC,VAS score or EQ-5D questionnaires.

Answer: A