[Neuromyelitis optica presenting concomitantly with systemic lupus erythematosus: Report of one case].

Neuromyelitis optica (NMO) is a severe demyelinating disease of the central nervous system, which preferentially attacks the optic nerve and spinal cord. It is associated with antibodies against aquaporin 4. Morbidity and mortality are higher than in multiple sclerosis and its treatment focuses on immunosuppressive drugs.

[Cerebral vein thrombosis secondary to closed head injury. Report of one case].

Intracranial sinus thrombosis (1ST) after closed head injury is an uncommon but potentially serious complication. It has no correlation with the severity of the injury. The symptoms and clinical course are highly variable.

[Anti-GQ1b syndrome: report of four cases].

Anti-GQ1b syndrome includes Miller Fisher Syndrome (MFS), Guillain Barré Syndrome (GBS), Bicker staff`s brain stem encephalitis (BBE) and Acute Ophtamoplegia (AO). We report four patients aged 16 to 76 years, with anti-GQ1b syndrome. All presented with MFS, one of them evolved to GBS pharyngeal-cervical-brachial variant and other to GBS with BBE.