Radiation-induced dermatitis is one of the most prevalent complications in patients undergoing cancer radiotherapy and poses a significant challenge to cancer therapy. The symptoms include erythema, dry desquamation, and moist desquamation, which are frequently observed in patients with breast, head and neck, anal, and vulvar cancers. Early skin reactions typically manifest within 2–4 weeks following the initiation of radiotherapy. In severe cases, acute dermatitis can cause radiotherapy interruptions, prolong treatment time, and ultimately affect patient outcomes and quality of life. Currently, there are numerous guidelines on radiation dermatitis, including the Multinational Association of Supportive Care in Cancer (MASCC), British Columbia Cancer Agency (BCCA), Oncology Nursing Society (ONS), and UK Society of Radiographers (SCoR) guidelines. In China, dermatology experts have drafted a consensus. However, due to the differing backgrounds of experts, recommendations among guidelines vary. These guidelines were first developed by Chinese radiation oncologists. The evidence-based guideline in this paper fully considers and adopts China's national conditions; hence, it can be easily applied in daily practice.

The standard of care for patients with recurrent and metastatic nasopharyngeal carcinoma remains unclear. There is an urgent need to identify effective and low-toxicity treatment methods for such patients. The integration of current evidence to form an optimal treatment modality for recurrent and/or metastatic nasopharyngeal is worth exploring. In recent years, several outstanding clinical trials have emerged for the comprehensive treatment of recurrent and/or metastatic nasopharyngeal carcinoma. New evidence has been added for the local treatment of patients with metastasis. Endoscopic surgery, radiomics, and other technologies help achieve precise local treatment. Novel immunotherapeutic drugs have been approved for the treatment of patients with metastasis in China. The combination of immunotherapy, chemotherapy, and targeted therapy is promising and requires confirmation. Future studies will continue to focus on individualization and precision medicine.