Small Fiber Neuropathy Clinical Trial
Official title:
Retrospective Study of Causes Associated With Small Fiber Neuropathies.
Small fiber neuropathy (SFN) is an injury of cutaneous nerve fibers, mainly by a decrease in
their density within the cutaneous tissue. The symptomatology associated with this SFN is
broad with symptoms that are essentially sensory, but also autonomic. The etiologies of SFN
are numerous (diabetes, drug, infectious, immunological...) and clinically non-specific,
justifying a broad etiological assessment. The appearance of staged skin biopsies in the SFN
balance sheet has greatly helped to improve diagnosis.
Despite this, a significant part of SFN remains without associated etiology and is considered
idiopathic.
As the distribution of the different causes of SFN remains a missing data to date, the
completion of this cohort study by one of the SFN reference centres should make it possible
to establish the prevalence of SFN causes over a large population.
Only patients with clinical symptoms that may be related to SFN and who have been sampled for
SFN, positive or not, will be eligible for recruitment.
The result of the anatomopathological sampling will allow patients to be separated into two
groups, with or without SFN.
The main judgement criteria will be the prevalence of etiologies associated with SFN:
diabetes, medication, systemic lupus erythematosus, Gougerot-Sjögren syndrome, amylosis,
dysthyroidism, alcoholism, vitamin B12 deficiency, HIV infection, hepatitis C, paraneoplastic
syndrome, hereditary disease (Fabry disease, Friedreich ataxia,...), idiopathic, others.
n/a
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