A comparative study between lidocaine and methyl salicylate patches in treatment of myofascial pain
Research Abstract
The aim of the present study was to compare lidocaine versus methyl
salicylate patches in treatment of myofascial pain. Thirty patients suffered from
myofascial pain in head and neck muscles aging from 20 to 45 of either sex
were divided randomly into three groups. Group one (10 patients) considered for
treatment with methyl salicylate patch, group two (10 patients) were treated
through lidocaine patch and group three (10 patients) acted as a controlled group
through the application of plain patches without any active ingredient. Patients
rated their baseline pain intensity level, both at rest and with movement, using a
100-mm visual analog scale (VAS), where (o) indicate no pain , (20) slight pain
, (40) mild pain , (60) moderate pain ,(80) sever pain , and (100) extreme pain
(that could not tolerated). Degree of mouth opening measured through the
calibration of the inter incisal distance. (Normal inter incisal distance range from
40 to 55 mm). Both range of motion (lateral movement) and the disability
resulting from painful symptoms (measured as pain – related interference in
usual daily activity, mood, work activity or quality of life) were assessed.
Each patient received one patch that replaced by the patient every twelve
hours; the patient informed to remove the last patch twelve hours before the visit
on fifth day. All parameters (pain intensity, degree of mouth opening, range of
motion and disability) were repeated on fifth day (twelve hours after removal of
the last patch) and on the ninth day (after fthe last patch) and on the ninth day (after four days of follow up).Pain intensity
level showed a significant reduction on pain intensity scores after the 1st session
(fifth day) followed by slightly more reduction in pain intensity after ninth days
period for group 1 and group 2. Both degree of mouth opening and range of
motion (lateral movement) showed a significant increase after the first session
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(fifth day) followed by slightly more increase after session 2 (ninth day) for
group 1 and group 2 but with group 3 there were no any improvement. A
significant reduction on pain intensity scores after the 1st session (fifth day)
followed by an insignificant reduction on Daily activity after the ninth day
period for group 1 and group 2 with An insignificant difference in Daily activity
after different follow-up periods for group 3.our days of follow up).Pain intensity
Research Keywords
myofascial pain , methylsalicylate patches , lidocaine patches