RT Journal Article SR Electronic T1 Miller Fischer and posterior reversible encephalopathy syndromes post COVID-19 infection JF Neurosciences Journal JO Neurosciences (Riyadh) FD Prince Sultan Military Medical City SP 295 OP 299 DO 10.17712/nsj.2021.3.20210002 VO 26 IS 3 A1 Ali A. Al Haboob YR 2021 UL http://nsj.org.sa/content/26/3/295.abstract AB COVID-19 infection displays heterogeneity of clinical manifestations in symptomatic and asymptomatic patients. We report on a child with Miller Fischer syndrome (MFS) and posterior reversible encephalopathy syndrome (PRES) post-COVID-19 infection. An 11-year-old boy presented with vomiting, headache, blurred vision, dysarthria, dysphagia, respiratory failure, muscle weakness, and unsteadiness. He had been exposed to COVID-19 through an asymptomatic elder brother two months prior to his illness. The MRI brain showed findings consistent with PRES and the diagnosis with Miller Fischer variant of the Guillain-Barré syndrome was made. A cerebrospinal fluid analysis revealed cytoalbuminous dissociation, and a nerve conduction velocity study conclusively showed polyneuropathy. A fluoroscopy of the diaphragms found that there was limited movement in both. Although children seem to be less affected by COVID-19 infection, this report highlights on an important neurological complications that can develop in children and its presence should be taken into consideration when diagnosing different forms of Guillain-Barré.