Association of subcortical structural shapes with fatigue in Multiple Sclerosis.

This study investigated the shape changes in the subcortical structure of patients with multiple sclerosis (PwMS) and how they are associated with MS-related fatigue. Surface-based vertex analysis was performed on 25 fatigued RRMS (F-MS), 25 non-fatigued RRMS (NF-MS), and 40 healthy controls (HCs). Compared to HCs, PwMS showed regional shape contractions in the areas of bilateral thalamus. The morphological changes in the bilateral thalamus occur only on the side closest to the ventricles. Compared to the NF-MS subgroup, F-MS patients showed regional surface atrophy in the areas of left caudate nucleus, which was negatively correlated with the severity of fatigue.