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Looking ahead: The risk of neurologic complications due to COVID-19.

The rapid spread of Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 has become a public health emergency of international concern. The outbreak was characterized as a pandemic by the World Health Organization (WHO) in March 2020. The most characteristic symptom of patients with COVID-19 is respiratory distress. Some patients may also show neurologic signs and symptoms ranging from headache, nausea, vomiting, and confusion to anosmia, ageusia, encephalitis, and stroke. Coronaviruses are known pathogens with neuroinvasive potential. There is increasing evidence that coronavirus infections are not always confined to the respiratory tract. CNS involvement can occur in susceptible individuals and may contribute overall morbidity and mortality in the acute setting. In addition, postinfectious, immune-mediated complications in the convalescent period are possible. Awareness and recognition of neurologic manifestations is essential to guide therapeutic decision-making because the current outbreak continues to unfold.