Non Invasive Neurostimulation Technology for the Treatment of Type I Complex Regional Pain Syndrome (CRPS I)

The instrument will be used to measure the change of pain before and after the intervention will be the Visual Analogue Scale (VAS).

Participants will be asked to mark the level of their pain on a 100 mm, no hatched VAS scale marked at one end as "no pain" and at the other as "worst pain imaginable".

The Quick DASH Upper Extremity Rating Scale for Upper Extremity can be completed by the patient in aid of the orthopedic surgeon. It consists of 11 items that assess the presence of symptoms and the functional capacity of the individual surveyed during the last week. A total of 11 questions must be answered for the questionnaire to calculate the functional situation accurately

The Daniels scale or Daniels test is a tool used to measure the strength of muscles in the human body, especially in patients with neuromuscular disorders or localized injuries.

the scale itself follows a specific numbering, with six well-differentiated levels from 0 to 5. These are the following:

0: the muscle does not contract, complete paralysis.

• the muscle contracts, but there is no movement. The contraction can be palpated or visualized, but there is no movement.
• the muscle contracts and performs all the movement, but without resistance, since it cannot overcome gravity.
• the muscle can carry out the movement against gravity as the only resistance.
• the muscle contracts and performs the full movement, in full range, against gravity and against moderate manual resistance.
• the muscle contracts and performs the movement in full range against gravity and with maximum manual resistance

The Medical Outcomes Study Sleep Scale questionnaire will be used. This instrument was designed to obtain subjective information on the quality and quantity of sleep in the last 4 weeks. It is composed of 12 Likert-type items with 6 degrees of response (from 1-always to 6-never) and grouped into the following categories:

• Sleep disturbances
• snoring
• Waking up with shortness of breath or headache
• Amount of sleep
• Adequacy of sleep
• Daytime sleepiness

For its interpretation, a gross estimate of the amount of sleep is obtained (item 2) and scores in the different subscales. The direct scores are transformed into a scale from 0 to 100, with no cut-off points; the higher the score, the greater the intensity of the concept evaluated.