Reversible conduction block of peroneal nerve associated with SARS-CoV-2.

Background: The ongoing SARS-CoV-2 pandemic, which is dramatically spreading worldwide, is well known for its respiratory sequelae. Besides cases of Guillain-Barré Syndrome, encephalitis, hyposmia, the whole range of neurological complications due to SARSCoV-2 is still not well known.

Methods And Findings: Herein, we report a new case of COVID-19, associated with mononeuropathy with reversible conduction block (CB). After SARS-CoV-2 infection, the patient developed acute weakness of left peroneal muscles. He underwent an endovenous immunoglobulin treatment, and symptoms improved. Two electroneurographic exam (before and after treatment), showed a reversible CB on left peroneal nerve. Dosage of serum antiganglioside antibodies showed anti-GM1 IgM positivity.

Conclusions: The present case gives new informations about reversible CB neuropathy as an acute presentation of SARS-CoV-2. Besides, antiganglioside antibodies evaluation could be useful to understand etiology of the increasing number of neurological manifestations related to SARS-CoV-2.