In the End: Associations Between Sleep Disturbance and Functional Impairment in Fibromyalgia-A Path Analysis Study

Area of Science:

• Pain Medicine
• Sleep Medicine
• Psychology

Background:

• Fibromyalgia is a chronic pain condition with widespread pain, sleep disturbances, and mood disorders.
• Sleep problems are recognized contributors to fibromyalgia symptoms, but their mechanisms linking to psychological factors and functional impairment are unclear.

Purpose of the Study:

• To investigate the direct and indirect relationships among sleep disturbances, pain catastrophizing, depression, bodily pain, and functional impairment in women with fibromyalgia.
• To elucidate the pathways through which sleep disturbances influence functional outcomes in fibromyalgia.

Main Methods:

• Path analysis was used to examine relationships among key variables.
• Data were collected from 253 women diagnosed with fibromyalgia.

Main Results:

• Poor sleep quality was directly associated with increased pain catastrophizing and depression.
• Pain catastrophizing and depression were significantly related to greater functional impairment.
• These factors explained 32.5% of the variance in functional impairment; no significant indirect effects via bodily pain were found.

Conclusions:

• Poor sleep quality plays a critical role in functional impairment among individuals with fibromyalgia.
• Interventions targeting sleep improvement may alleviate psychological distress, reduce disability, and enhance quality of life in fibromyalgia patients.