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Application for ESRA Abstract Prizes:Background and Aims Post-traumatic neuropathic pain with allodynia and hyperpathia is very debilitating and treatment with systemic medications is often frustrating due to poor efficacy and unacceptable side-effects. We report the case of a medical student with persistent allodynia and hyperpathia of her dominant upper limb following multiple fractures of the humerus and olecranon with ulnar nerve injury treated successfully with a single application of external neurostimulation (Biowave) enabling her to touch the affected area and apply topical menthol cream for symptomatic relief.Methods Patient was treated with external neuromodulation (Biowave) for 30 minutes as per protocol; one electrode was placed proximal to the elbow on the ulnar aspect and the distal electrode was placed on the ulnar aspect of the wrist. Within minutes of the stimulation the patient was able to touch the area of allodynia without any discomfort. The stimulation was well tolerated.Results Pre-procedure, the pain score was 8/10 on VAS. Patient reported immediate improvement in pain at 5 minutes during stimulation (VAS 0/10) and had sustained pain relief post-treatment (VAS 0/10) lasting for 72 hours. Though there was some residual pain, patient was able to use topical 2% menthol cream four times a day. Patient was also able to do active wrist extension which was previously not possible due to pain. We have offered repeat Biowave treatment if required if there is return of symptoms.Conclusions External neurostimulation with Biowave could alleviate neuropathic pain and facilitate the use of topical treatment for managing localised neuropathic pain avoiding systemic side-effects including cognitive dysfunction.