Assessing fatigue and related factors in adolescents with familial Mediterranean fever (FMF): psychometric properties of the PedsQL Multidimensional Fatigue Scale.

Background: Fatigue is a common problem in pediatric rheumatic diseases and is associated with poor quality of life. However, no validated methods are available to measure fatigue in adolescents with familial Mediterranean fever (FMF). The aim of the study was to establish validity and reliability for the child self-report PedsQL Multidimensional Fatigue Scale (PedsQL-MFS) and to investigate the effects of physical characteristics, diseaserelated characteristics, sleep quality/duration, and the amount of physical activity on fatigue in adolescents with FMF.

Systemic Sclerosis Quality of Life Questionnaire (SScQoL): translation into Turkish and assessing its psychometric properties.

Background: Systemic sclerosis (SSc) is a chronic autoimmune disease that affects the connective tissues and leads to physical, emotional, and social challenges for patients. Evaluating health-related quality of life (HRQoL) with a disease-specific tool may be preferable for improving patient care and treatment outcomes. The aim of this study was to translate the Systemic Sclerosis Quality of Life Questionnaire (SScQoL) into Turkish and to investigate its psychometric properties.