M.Tech. (Homoeopathy) / Neck pain is a common condition usually experienced due to mechanical or degenerative problems (Colledge et al., 2010). The onset of neck pain may be acute and associated with asymmetrical restriction of neck movements and a history of awkward posture or sudden onset. Acute neck pain is an aching pain in the cervical paraspinal muscles and ligaments. It is associated with muscle spasm, stiffness and tightness in the upper back and shoulders that lasts up to six weeks. Headaches may be present (Bickley & Szilagyi, 2009). Causes of neck pain can be mechanical, inflammatory, metabolic, neoplastic, due to referred pain or other underlying aetiologies (Colledge et al., 2010). The most common treatments for neck pain are nonsteroidal anti-inflammatory drugs, physiotherapy, chiropractic adjustment or therapeutic massage (Taylor, 2010). The NeuroTrac® MultiTENS device provides a non-invasive, drug-free method of controlling acute pain by transmitting mild electrical impulses via surface electrodes through the skin (Verity Medical Ltd., 2013). There have been many studies done on Transcutaneous Electrical Nerve Stimulation (TENS) devices, but little on its immediate effect on acute neck pain. The aim of this study was to determine the immediate effect of the NeuroTrac® MultiTENS device on acute neck pain, using the Neck Pain Disability Index, Visual Analogue Scale and the Cervical Range of Motion (CROM). This study was an unblinded, single-group experimental design (Brink, 2010). The study took place at the University of Johannesburg Campus Clinic. Recruitment took place by means of advertisements (Appendix H) placed at the University of Johannesburg campuses. Inclusion criteria consisted of males and females between the ages of eighteen to fifty years. Participants had to be suffering from aching pain in the cervical paraspinal muscles and ligaments with associated muscle spasm, stiffness and tightness in the upper back and shoulders that was present for more than one day and no longer than one week, with decreased range of motion on CROMs (Appendix G) and a minimum score of 10 on the Neck Pain Disability Index (Appendix D). Exclusion criteria consisted of participants suffering from severe headaches with meningeal signs associated nausea, blurred vision, photophobia and phonophobia or fever; a history of thrombus formation or transient ischaemic attack (Longmore et al., 2010); if they had a pacemaker or if they have had any head and neck surgery; if they suffered from cardiac arrhythmia or myocardial infarction; pregnancy or suspected pregnancy; if they had a general skin sensitivity or known allergy to adhesives or if they have had a recent chiropractic adjustment. A total of forty participants were selected. The participants acted as their own baseline control. The researcher was only required to see participants once for one forty minute session to determine the immediate vi effect of the NeuroTrac® MultiTENS device on acute neck pain. Participants were asked to fill in an Information (Appendix A) and Consent Form (Appendix B). Participants came in for an initial consult where a history was taken on the type of neck pain experienced and the cause of the pain experienced. Vital signs were recorded on a case taking form (Appendix C). Thereafter participants were asked to fill in the Vernon and Mior Neck Pain Disability Index (Appendix D) relating to the neck pain they experienced and to complete a Visual Analogue Scale to rate their neck pain (Appendix F). The CROM goniometer device was placed on the participant’s head to measure all cervical spine ranges of motion, to the limit of pain (Appendix G). All forty participants received treatment at a frequency of 90Hz with a 200μS pulse width with the electronic pads placed on the shoulders. NeuroTrac® MultiTENS device treatment was administered for forty minutes to the participants in a seated position. The treatment was administered by the researcher. Once the treatment ended, participants were asked to fill in an amended questionnaire (Appendix E) that assessed if they noticed a change in the neck pain they were experiencing, to complete the Visual Analogue Scale (Appendix F) and their vital signs were again recorded on a case taking form (Appendix C). The CROM goniometer device was again placed on the participant’s head to measure all cervical spine ranges of motion to assess if there was a change in the readings recorded (Appendix G). The data obtained was statistically analysed by the researcher with the aid of a statistician at Statkon. The Shapiro-Wilk test and the Wilcoxon Signed-Rank test (non-parametric test) were used (Van Staden, 2014) ...