We examined a 27-year-old woman who developed rapidly progressive quadriplegia and acute respiratory failure that required mechanical ventilation in the intensive care unit. It was unclear whether this was a presentation of Guillain-Barré syndrome (GBS) or acute-onset chronic inflammatory demyelinating polyradiculoneuropathy (A-CIDP). Remarkable features included multiple cranial nerve involvement, respiratory failure, dysautonomia, and skin manifestations. Several autoantibodies were elevated, including antinuclear (ANA), anticardiolipin (aCL), thyroid, and calcium-sensing receptor (CaSR) autoantibodies. The patient was initially diagnosed with GBS and treated with intravenous immunoglobulin (IVIg). After almost complete recovery, relapse with quadriplegia and respiratory failure was observed 12 weeks after motor symptom onset. She then received IVIg and steroid pulse therapy followed by maintenance oral methylprednisolone and plasma exchange. She recovered completely 4 months after the relapse. The further clinical and serological course was consistent with systemic lupus erythematosus (SLE)-associated CIDP. Herein we evaluate the association between A-CIDP and some biological markers of autoimmunity.

BackgroundInclusion-body myopathy with Paget's disease of the bone and frontotemporal dementia (IBMPFD) is a rare, late-onset autosomal disorder arising from missense mutations in a gene coding for valosin-containing protein.Case ReportWe report the case of a man carrying the previously described p.Arg159His mutation, who had an unusual axonal sensorimotor neuropathy as the first clinical manifestation of IBMPFD, and for whom diagnosis only became clear 8 years later when the patient developed frontotemporal dementia.ConclusionsPeripheral neuropathy is a rare manifestation of IBMPFD. This underdiagnosed disorder should be considered when a patient develops dementia or has signs of Paget's disease.

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