system
Given the following post, respond as if you're commenting on Reddit:
human
Cognitive decline post-COVID - does it improve over time?

I understand that evidence at this point might be limited, but is there anything to suggest that the cognitive decline caused by COVID-19 will improve over time, or does it look like the damage would likely be permanent?
gpt
No one knows for sure, but cognitive issues after severe viral infections are common and not really uncommon after even minor viral infections. Even a cold will show lower test scores for several months. Anything that really engages the immune system will. The very minor lowing of skills from minor cases is likely in lines with that and will recover. 

On the other hand very severe covid where you have low oxygen for a period of time is more likely to be real actual brain damage. People on ventilators that barely could get oxygen into their lungs for weeks that come out with issues are very likely suffering from that extended lack.