As the COVID-19 pandemic stretches on, so too does the disease’s list of known symptoms. ... A paper published Oct. 5 in the Annals of Clinical and Translational Neurology is thought to be the first to examine the prevalence of neurologic symptoms in U.S. COVID-19 patients. Out of 509 people admitted to Chicago hospitals for coronavirus care this spring, 82% had a neurologic symptom at some point, according to the paper. The most common neurologic symptoms were muscle aches and headaches, which were experienced by about 45% and 38% of patients, respectively. Almost a third of the patients developed encephalopathy, an umbrella term that refers to alterations in brain structure or function.