Chronic Pain Clinical Trial
Official title:
Effect of Transcranial Magnetic Stimulation in the Cortical, Subcortical Neuromodulation and in Pain Threshold of Chronic Myofascial Pain Patients
The purpose of this study is to investigate if rTMS may have a positive impact on pain thresholds and cortical excitability in subjects with chronic musculoskeletal diseases of complex cranio-cervical-mandibular with myofascial component.
Status | Recruiting |
Enrollment | 24 |
Est. completion date | May 2014 |
Est. primary completion date | February 2014 |
Accepts healthy volunteers | No |
Gender | Female |
Age group | 19 Years to 65 Years |
Eligibility |
Inclusion Criteria: Will be included in the study female literate patients, with chronic
myofascial pain of the craniomandibular complex (duration longer than 3 months). Must
submit at least one (1) myofascial trigger point pain and restriction of neck mobility,
skull or face and / or shoulder girdle, at the time of evaluation. Also, patients should
report verbally have had pain and / or discomfort in a mean score greater than or equal to
30 mm, at least 7 consecutive days pre-treatment, to be measured on the visual analog
scale (VAS) (scores ranging from 0 to 100 mm). Exclusion Criteria: Will be excluded from the study patients with neurological deficits, systemic diseases unbalanced, fibromyalgia, chronic inflammatory diseases. Moreover, those who are using steroids. |
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Subject), Primary Purpose: Treatment
Country | Name | City | State |
---|---|---|---|
Brazil | Hospital de Clinicas de Porto Alegre | Porto Alegre | Rio Grande do Sul |
Lead Sponsor | Collaborator |
---|---|
Hospital de Clinicas de Porto Alegre | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior., Federal University of Rio Grande do Sul |
Brazil,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Other | BDNF | The BDNF will be measured bu ELISA | An expected average of 3 months. (At baseline and at the end of intervention period). | No |
Primary | Pain threshold | The primary outcome will be pain, as assessed by the pain score diaries [global pain in the last 24 hours, and the score on Brazilian Profile of Chronic Pain: Screen (B-PCP:S) the amount of analgesics used weekly throughout the treatment period, the effect of treatment on modulates corticospinal excitability assessed by evoked pain by Quantitative Sensory Testing (QST) during Conditional Pain Modulation (CPM) and the level of BDNF. | An expected average of 3 months. (At baseline and at the end of intervention period). | No |
Secondary | Cortical excitability parameters (MEP, ICF, CSP and SICI) | The resting motor threshold (RMT) will be determined by obtaining five MEP with peak-to-peak amplitude of 50 µV out of ten consecutive trials. Next, ten MEP will be recorded with an intensity set to 130% of the individual RMT. Moreover, CSP will be performed during muscle activity measured by a dynamometer to be approximately 20% of maximal force. Accordingly, ten CSP will be recorded using an intensity of 130% of the RMT. SICI using an interstimulus interval of 2 ms was also assessed. The first conditioning stimulus will be set at 80% of the RMT, whereas the second test stimulus will be set at 100% of the individual MEP intensity. ICF will be assessed with an interstimulus interval of 12 ms. | An expected average of 3 months. (At baseline and at the end or intervention period) | No |
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