<p>PSQI, BDI, and BPI scores were higher in patients with NMSOD and fatigue than in those without fatigue. Moreover, the physical and mental component scores of quality of life assessed by SF-36 were lower in patients with NMSOD and fatigue. PSQI, Pittsburgh Sleep Quality Index; BDI, Beck Depression Inventory; BPI, Brief Pain Inventory; SF-36, Short-Form 36 Health Survey.</p