Bright white light therapy (LT) can improve fatigue in several disease states but has not been studied in multiple sclerosis (MS).To determine whether controlled home-based LT is feasible, tolerable, and well-adhered to in MS-associated fatigue.A randomized, controlled trial of twice-daily 1-h bright white LT (BWLT) (10,000 lx, active arm) versus dim red LT (DRLT) (

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