Clinical Study on Rumu Zhitong Ointment for Treating Cancer Pain via Acupoint Selection Along Meridians Combined with Plaster Application

INTERVENTION: Experimental Group:On the basis of conventional medication, the experimental group received combined meridian‐guided acupoint selection and topical application of Olibanum‐Myrrh Analgesic Ointment. A 5cm×7cm large patch (weighing approximately 20g) was applied to the primary tumor or pain site, aimed at inhibiting tumor growth, relieving pain, and controlling the primary cancer. Additionally, source points, collateral points, and cleft points located along the meridians traversing the primary site of the tumor or pain were selected. One 2cm×2cm small patch (weighing approximately 1.2g) was applied to each of these three acupoints, aiming to unblock the meridians, relieve pain, and enhance the analgesic effect.;Control Group:On the basis of conventional medication, the control group received topical application of Olibanum‐Myrrh Analgesic Ointment at the Ashi point (pain site). Only a 5cm×7cm large patch (weighing approximately 20g) was used, aiming to inhibit tumor growth, relieve pain, and control the primary cancer.; CONDITION: cancer pain PRIMARY OUTCOME: Pain Score;Quality of Life Score;Onset Time and Duration of Efficacy;TCM Syndrome; SECONDARY OUTCOME: Opioid use;Anxiety Inventory; INCLUSION CRITERIA: 1) Patients with pathologically confirmed malignant tumors; 2) According to the NCCN Clinical Practice Guidelines for Adult Cancer Pain (2019.V1)and the WHO Guidelines for Cancer Pain Relief: Stepped Care Approach, the etiology of cancer pain must be directly caused by the tumor (including pain from primary and/or metastatic tumors), with a pain score =1; 3) Fixed pain location; no skin breakdown, redness, swelling, or heat in the affected area; 4) Pain characterized as persistent cold pain, stabbing pain, worse at night, alleviated by warmth; TCM local syndrome differentiation indicates a yin syndrome; 5) Age =18 years; 6) Normal verbal communication ability, capable of assessing their own pain and general condition, and able to cooperate in evaluating pain and quality of life; 7) Informed of the treatment details, agreed to participate, and signed an informed consent form.