| In patients with fibromyalgia transcranial direct | | | | 21-day follow-up period.At patients who are very |
| current stimulation (tDCS) provides significant pain | | | | refractory to other types of medical treatment |
| relief that can last for several weeks.This | | | | the improvement have been seen as a very |
| technique has rare and minimal adverse effects | | | | significant reduction in pain.A reduction of pain |
| shows the studies made at the University of Sao | | | | might be associated with an improvement in the |
| Paulo, Brazil. | | | | motor function .The motor cortex stimulation |
| Studies have been made through 32 women with | | | | leads to a decrease in reaction time in the |
| fibromyalgia and moderate to severe pain into | | | | contralateral limb. |
| three groups: one group received tDCS of the | | | | The synaptic effects induced by this technique |
| primary motor cortex, another received tDCS of | | | | might explain the sustained effects of this |
| the dorsolateral prefrontal cortex and the third | | | | technique.The phenomenon observed during |
| received sham stimulation.Patients received a 2 | | | | learning - the long-term potentiation (LTP) is similar |
| mA current for 20 minutes for 5 days or sham | | | | with a synaptic effect caused by the direct |
| stimulation delivered on the same schedule. | | | | current stimulation.It have been observed that |
| Before and after tDCS using a visual analog scale, | | | | five sessions of tDCS increased the magnitude |
| the presence of tender points, the patient's global | | | | and duration of these effects. |
| assessment and the clinician's assessment pain | | | | Local reactions such as transient mild skin redness |
| levels were assessed.After this study the | | | | in the site of application, sleepiness during the |
| investigators have reported that tDCS of the | | | | session and dizziness after stimulation have been |
| primary motor cortex was significantly more | | | | met to a minority of subjects.tDCS is a simple, |
| effective for pain relief than tDCS of the | | | | non-expensive technique of non-invasive brain |
| dorsolateral prefrontal cortex or sham | | | | stimulation that has shown to be a powerful |
| stimulation.The similarly lower levels of pain relief | | | | technique of brain activity modulation since the |
| have been achieved also by the latter two groups. | | | | 50s and 60s.In the future this technique might |
| The effects of tDCS persisted through the | | | | have a significant impact in neuropsychiatry. |