Neurology
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To assess the correlation between cognitive impairment and overall vs regional CNS damage, quantified using conventional and diffusion tensor (DT) MRI tractography in multiple sclerosis (MS). ⋯ Lesions in strategic brain WM tracts contribute to cognitive impairment in MS through a multisystem disconnection syndrome.
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To investigate whether central facilitation of trigeminal pain processing is part of the pathophysiology of cluster headache (CH). ⋯ Asymmetric facilitation of trigeminal nociceptive processing predominantly on brainstem level was detected in patients with CH. This alteration is most pronounced in the acute pain phase of the disease, but appears to persist in remission periods. Only chronic CH patients show additional changes of PREP prompting to supraspinal changes of pain processing related to the chronic state of disease in regard to neuronal plasticity, which exceeds changes observed in episodic CH.