email article A 48-year-old man presents to a medical center in New York City after suddenly developing numbness in his upper left arm, along with weakness, and impairment of positional sensation. He says that for the past 8 hours, he has had severe headaches on the right side of his skull in the back, for which he took ibuprofen. He is right-handed and a nonsmoker. He notes that he had been diagnosed with SARS-CoV-2 infection about a month earlier, when he went to the same medical center after feeling generally unwell, with fever, low-back pain, and right-sided headache. At that time, clinicians confirmed COVID-19 via PCR testing. He reports that his symptoms lasted for 12 days, during which he remained quarantined at home, and on day 17, he returned to work.