| BoNT | botulinum toxin |
| BoNT-A | BoNT type A |
| BoNT-B | BoNT type B |
| CENTRAL | Cochrane Central Register of Controlled Trials |
| HADS | Hospital Anxiety and Depression Scale |
| HR-QoL | health-related quality of life |
| NRS | Numerical Rating Scale |
| NS | non significant |
| PEDro | Physiotherapy Evidence Database |
| RCTs | randomized controlled trials |
| SNRIs | Serotonin and norepinephrine reuptake inhibitors |
| TENS | Transcutaneous Electrical Nerve Stimulator |
| TRPM8 | Transient Receptor Potential Member 8 |
| TRPV1 | Transient Receptor Potential Vanilloid 1 |
| VAS | Visual Analogue Scale |
| WHOQOL-BREF | World Health Organization Quality of Life questionnaire |