Pain Reduction and Changes in Upper Limb Function Produced by Different Treatments in Carpal Tunnel Syndrome

Inclusion Criteria: * Participants must be medically diagnosed with unilateral carpal tunnel syndrome (with confirmative electrodiagnostic findings). * Full understanding of written and spoken Spanish (language). * Participants must freely consent to participate. * The presence of positive Phalen and Tinel sign. * The presence of carpal tunnel syndrome signs and symptoms Exclusion Criteria: * The lack to meet inclusion criterions, the presence of cognitive impairment, tumors, cancer, recent (affected) upper limb surgery or trauma, pregnancy, metabolic neuropathy, obesity (body mass index over 30), participants who are not employed, deformities of the (affected) upper limb, recent skin injuries or infections (in the affected upper limb), autoimmune inflammatory conditions or flu type symptoms, allergy to gabapentin, allergy to ibuprofen arginine, and also: participants must not be (during the present investigation) under any type of pain reducing treatment (conservative, homeopathic, invasive or not invasive).