COVID-19 can be classified as Acute COVID-19: The first 4 weeks after onset of illness Subacute COVID-19: Symptoms and abnormalities present from 4 to 12 weeks after onset of acute COVID-19 Chronic COVID-19 (post-COVID-19 syndrome): Symptoms and abnormalities that persist ≥ 12 weeks after onset of acute COVID-19 and not accounted for by an alternative diagnosis Neurologic and neuropsychiatric manifestations of COVID-19 have been widely reported and can occur during the acute phase and / or during the recovery period, which can be prolonged.