Frequency of fibromyalgia in a cohort of Turkish patients with lung cancer and its effect on pain, sleep quality, fatigue and quality of life

This study aimed to examine the frequency of fibromyalgia (FM) in patients with lung cancer and evaluate its effect on patients' pain, sleep quality, fatigue, and quality of life parameters. The study was designed as a prospective cross-sectional and a total of 116 lung cancer patients were included. FM classification was made according to the 2016 ACR criteria. All patients were evaluated using a visual analog scale, fibromyalgia impact questionnaire, multidimensional assessment of fatigue, EuroQol 5D scale, Jenkins sleep scale, and Beck depression inventory. Patients were divided into FM-positive and negative groups according to the presence of FM. Demographic and clinical parameters were investigated between the groups. FM was detected in 14 (12.2%) patients. The mean age of the patients was 62.2 +/- 8.4 years. There was a male predominance in 93 (80.2%) patients. No statistical difference was found between the groups in terms of body mass index, age, symptom duration, chemotherapy, and radiotherapy history. A statistically significant difference was found between FM positive and negative groups in FIQ, multidimensional assessment of fatigue, JSS, EQ-5D, visual analog scale, and Beck depression inventory scores. FM is seen more frequently in patients with lung cancer and has a negative effect on sleep, quality of life, fatigue, and mental functions. We think that physicians should not ignore the presence of FM when treating patients diagnosed with lung cancer.