%0 Consensus Development Conference %T Definition and diagnosis of small fiber neuropathy: consensus from the Peripheral Neuropathy Scientific Department of the Brazilian Academy of Neurology. %A Gondim FAA %A Barreira AA %A Claudino R %A Cruz MW %A Cunha FMBD %A Freitas MRG %A França MC %A Gonçalves MVM %A Marques W %A Nascimento OJM %A Oliveira ASB %A Pereira RC %A Pupe C %A Rotta FT %A Schestatsky P %J Arq Neuropsiquiatr %V 76 %N 3 %D Mar 2018 %M 29809227 %F 2.035 %R 10.1590/0004-282x20180015 %X The aim of this study was to describe the results of a Brazilian Consensus on Small Fiber Neuropathy (SFN). Fifteen neurologists (members of the Brazilian Academy of Neurology) reviewed a preliminary draft. Eleven panelists got together in the city of Fortaleza to discuss and finish the text for the manuscript submission. Small fiber neuropathy can be defined as a subtype of neuropathy characterized by selective involvement of unmyelinated or thinly myelinated sensory fibers. Its clinical picture includes both negative and positive manifestations: sensory (pain/dysesthesias/pruritus) or combined sensory and autonomic complaints, associated with an almost entirely normal neurological examination. Standard electromyography is normal. A growing list of medical conditions is associated with SFN. The classification of SFN may also serve as a useful terminology to uncover minor discrepancies in the normal values from different neurophysiology laboratories. Several techniques may disclose sensory and/or autonomic impairment. Further studies are necessary to refine these techniques and develop specific therapies.