AIDP, acute inflammatory demyelinating polyneuropathy; AMAN, acute motor axonal neuropathy; AMSAN, acute motor sensory axonal neuropathy; ANA, antinuclear antibodies; ANCA, anti-neutrophil cytoplasmic antibodies; BAL, bronchoalveolar lavage; CK, creatine kinase; CMV, cytomegalovirus; COPD, chronic obstructive pulmonary disease, COVID-19, coronavirus disease 2019; CRP, C-reactive protein; CSF, cerebrospinal fluid; CT, computed tomography; DM, diabetes mellitus; EBV, Epstein–Barr virus; ESR, erythrocyte sedimentation rate; F, female; GBS, Guillain–Barré syndrome; GGT, gamma-glutamyl transferase; GOT, glutamic oxaloacetic transaminase; GPT, glutamate pyruvate transaminase; Hb, haemoglobin; HIV, human immunodeficiency virus; HSV, herpex simplex virus; ICU, intensive-care unit; IL, interleukin; IVIG, intravenous immunoglobulins; IL, interleukin; LDH, lactate dehydrogenase; LL, lower limbs; M, male; MRI, magnetic resonance imaging; NA, not available; PC, platelet count; PCR, Polymerase Chain Reaction; SARS-CoV-2, severe acute respiratory syndrome coronavirus-2; TNF, tumor necrosis factor; UL, upper limbs; VDRL, Veneral Disease Research Laboratory; VZV, varicella-zoster virus; WBC, white blood cells; X-ray: radiography