CD4 and Guillain-Barre syndrome: The case presented here had some atypical features: 1) although the patient had an asymmetric clinical presentation, he fulfilled the two main criteria for GBS diagnosis (progressive motor weakness and areflexia), and the electromyography supported this hypothesis; 2) the first lumbar puncture did not show elevated protein or pleocytosis, and pleocytosis remained not evident in the second lumbar puncture as would be expected in an HIV patient; 3) a late onset of HIV-associated GBS, with a low CD4 count in the initial evaluation.