Subacute sensory neuronopathy associated with Sjögren's sicca syndrome

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Abstract
Sensory subacute neuropathies associated with sicca syndrome without any systemic involvement have been reported rarely. A sixth case is described with what appears to be the first report of muscle and nerve biopsy findings. The histological studies revealed axonal degeneration without vasculitis in the sural nerve, and a slight denervation process and a discrete myositis in the gastrocnemius muscle, reflecting a subtle systemic disorder. The clinical course of a long-standing subacute sensory neuropathy, the biopsy-documented axonal degeneration, and the neurophysiological findings suggest involvement of the dorsal root ganglia.