COVID-19 can cause significant neurological damage, leading to symptoms such as delirium, psychosis, memory loss, and altered mental states. Complications often include encephalitis (inflammation of brain tissue), myelin deterioration, and cerebrovascular issues like strokes and brain hemorrhages. While the exact mechanisms are unclear, the virus may enter the central nervous system via the olfactory nerve, despite the relatively low expression of ACE2 receptors in the brain. A UK study of 125 patients with neurological symptoms found that 62% experienced cerebrovascular damage and 31% had altered mental states. Notably, these neurological symptoms can occur even in patients not hospitalized for severe respiratory illness.