Abstract
ObjectiveSeveral regional variants of Guillain-Barré syndrome (GBS) have been proposed in western countries, but other variants remain unclear, especially among mildly disabled cases. The aim of this study was to identify unvalidated GBS phenotypes among Japanese patients with mild GBS. MethodsRetrospective study of a cohort of patients at a University Hospital in Japan. ResultsAmong 107 GBS patients, 25 (23%) were classified as having mild GBS (GBS disability scale ≤ 2 at nadir). A review of mild cases identified 8 patients (7.5% of all GBS and 32% of mild GBS) with an unusual phenotype, namely a distal limb weakness form of GBS (DL-GBS), which showed limited distribution of limb weakness within hands and feet with preserved strength in proximal limb muscles. The patients with DL-GBS were characterized by mild-to-moderate weakness in distal parts of limbs especially fingers, lacking or mild sensory disturbance at distal limbs, sometimes hyperreflexia at legs, and having prior Campylobacter jejuni enteritis. Among the patients with GBS after C. jejuni enteritis, DL-GBS patients were characterized by frequent detection of anti-GM1 antibodies without anti-GD1a antibodies, whereas the others were often positive for the two antibodies. ConclusionsDL-GBS is a distinct regional phenotype of GBS, which should be differentiated from cervical myelopathy. It can be generally categorized as a mild type of GBS after C. jejuni enteritis, which has characteristic pattern of anti-ganglioside autoantibodies.
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