[COVID-19 with strange hallucinations and focal EEG abnormalities: Two case reports]

Scientific literature about the ongoing COVID-19 disease and pandemic is considerable, though articles concentrate on the severe cases and their central nervous system manifestations. This article demonstrates two cases: middle-aged female patients who had serologically proven SARS-CoV-2 infection with mild upper airway and central nervous system symptoms. The patients reported vivid, strange, simple, and complex visual and auditory hallucinations. A characteristic element of these complex hallucinations was a talking human-shaped figure. Only three similar cases have been published; this article discusses common features of all five patients. This summary highlights that in COVID-19 cases, minor central nervous system symptoms can accompany mild or even missing upper respiratory symptoms. The cranial MRIs of the presented patients were normal, but the EEG showed focal abnormalities in localizations related to hallucinations, which emphasizes the importance of EEG in differential diagnostic procedures.