Appaconitine Patch for Oral Mucositis Pain Caused by Chemoradiotherapy in Patients With Nasopharyngeal Cancer

The purpose of this clinical study is to evaluate the efficacy of lappaconitine adhesive patch in alleviation radiation induced mucositis pain and the improvements in QOL of patients with nasopharyngeal carcinoma . To determine if lappaconitine administered prior to radiation therapy reduces the severity of radiation induced oral mucositis pain in patients who have been diagnosed with nasopharyngeal carcinoma.