AIMS AND OBJECTIVES: To describe the experiences of radiation-induced xerostomia in patients with head and neck cancer.

BACKGROUND: Xerostomia is the most commonly occurring complication during and following radiotherapy. It can persist for several months or years and can have a significant impact on patients' quality of life.

DESIGN: This was a qualitative descriptive study.

METHODS: Semi-structured interviews were conducted with a sample of 20 participants. Inductive content analysis was used to analyse the qualitative data.

RESULTS: Analysis of the manifest content identified five categories: communication problems, physical problems, psychosocial problems, treatment problems and relief strategies. The latent content was formulated into a theme: due to lack of information from professionals, the patients had to find their own solutions for their problems.

CONCLUSIONS: Xerostomia is not only a biophysical symptom but also has a profound effect on the emotional, intellectual and sociocultural dimensions of life. The majority of patients continued to suffer from xerostomia and its associated symptoms after radiotherapy, in part, because of a lack of professional support, including the inability of nurses to provide oral health care.

RELEVANCE TO CLINICAL PRACTICE: Nurses need to be knowledgeable about the effects of radiotherapy on oral mucosa and about appropriate interventions. The healthcare system requires a symptom management platform for radiation-induced complications, to help patients, their families and healthcare professionals obtain information about self-care, treatments and relief strategies.

BACKGROUND: Xerostomia is a common complication in patients with head and neck cancer (HNC) during and after radiotherapy. The lack of a simply-administered and well-validated self-reported instrument has hampered the assessment and management of xerostomia for research and clinical purposes in China. OBJECTIVE: This study aimed to evaluate the content validity and psychometric properties of the Xerostomia Questionnaire (XQ) in Chinese patients with HNC undergoing radiotherapy. METHODS: This psychometric evaluation study enrolled 80 patients and was conducted in 2 stages: translation and evaluation of content validity and psychometric evaluation. Cognitive interviews (n = 10) were conducted using the Participant Interview Form. The psychometric evaluation (n = 80) included score distribution, homogeneity (interitem and item-total correlations), factor structure (exploratory factor analysis), internal consistency (Cronbach's α), criterion-related validity (person correlation), and test-retest reliability (intraclass correlations). RESULTS: Content validity was supported by cognitive interviews. The factor analysis resulted in a 1-factor solution with strong factor loadings (0.84-0.91) that explained 75.6% of the total variance. The internal consistency was excellent, with a Cronbach's α of .95. The XQ correlated strongly with other measures of xerostomia (0.70-0.80), which supports criterion-related validity. The test-retest reliability was excellent (intraclass correlation coefficient = 0.92). CONCLUSIONS: The result provides evidence for the validity and reliability of the XQ in a sample of Chinese patients with HNC. IMPLICATIONS FOR PRACTICE: The XQ can be used in both clinical practice and research as a valuable tool to screen for problems with xerostomia, monitor the xerostomia level, and evaluate the effects of treatment and interventions among patients with HNC.