We herein showed that in healthy subjects the presence of repeater F waves might increase, when stimulation conditions other than standard single, supramaximal impulses were used. The frequency of repeaters was dependent on the overall F wave persistence, but there was no evidence to support a relationship with the type of motoneurons that was preferentially stimulated.

No abstract

No abstract

BackgroundChronic inflammatory demyelinating polyneuropathy (CIDP) as a pure sensory variant is rarely encountered. Therefore the best treatment option is hard to define.Case presentationsWe reported two middle-aged patients of Caucasian origin, one female and one male, who over a period of several months presented limbs and gait ataxia. Clinical and neurophysiological examination revealed only sensory abnormalities. A diagnosis of atypical CIDP was suggested, considering the elevated CSF protein level and the presence of anti-gangliosides antibodies. Ten and 15 days respectively after initiation of prednisolone treatment both patients experienced exacerbation of sensory symptoms and emerging of muscle weakness. Steroids were then substituted by rituximab in the first patient and intravenous immunoglobulin in the second patient resulting in gradual decrement of symptoms and signs. Two-year follow-up showed no further deterioration.ConclusionCaution should be exercised when treating cases of pure sensory polyneuropathy with high dose steroids since an unfavorable outcome is possible.

No abstract