Multisystem neuronal involvement and sicca complex: broadening the spectrum of complications.

We report two patients with multisystem neuronal involvement associated with sicca complex. One had a lower motor neuron syndrome combined with a flaccid bladder and rectum. The second patient had unilateral hearing loss, sensory neuronopathy, Adie's pupils, upper motor neuron signs, and autopsy-proven anterior horn cell degeneration. Our cases lead us to propose that the spectrum of neuronal involvement occurring with sicca syndrome may be wider than is currently appreciated.