The psychiatric conditions were much more common, but the neurological conditions "are significant, especially in those who had severe Covid-19," professor Paul Harrison, lead author of the study from the Department of Psychiatry at Oxford University, said in a release.
So, how does a respiratory disease lead to neurological and psychiatric effects? Here's what you need to know:
How Covid and other viruses affect your brain
In addition to the hallmark symptoms of Covid infection, such as fever, cough and shortness of breath, 25% of people experience symptoms related to their brain and nervous system, including dizziness, headache, debilitating fatigue and "brain fog" or cognitive impairment, which is trouble remembering, learning and concentrating. While symptoms tend to go away once someone recovers, some Covid survivors experience lasting long-term effects.