"POEMS syndrome"
"There is usually an increase in CSF protein content and slowed conduction velocities on nerve conduction studies 11."
"The hallmark feature is thickening and enhancement of peripheral nerves, brachial and lumbosacral plexus, and nerve roots. A cutoff value of 5 mm has frequently been suggested for root thickness 13,14."
"Chronic inflammatory demyelinating polyneuropathy can be treated with intravenous immunoglobulin, corticosteroids, plasmapheresis, and other immunosuppression (e.g. rituximab, efgartigimod, cyclophosphamide) 4,8,9,14."
"hereditary neuropathies with late-onset (e.g. some types of Charcot-Marie-Tooth disease)"