 The proposed study will evaluate the feasibility of the VibrentTM smartphone application to evaluate radiation-induced mucositis pain out of the clinic and its ability to enhance adherence to the prophylactic pain management algorithm. Successful completion of the proposed study will provide the foundation upon which a randomized trial can be conducted evaluating the efficacy of prophylactic gabapentin narcotics for various toxicity, patient-reported and oncologic outcomes in patients receiving head and neck radiotherapy. Moreover, successful establishment of this pain analgesic approach may have future implications in other pain models where there is planned neuropathic tissue injury. 