👉 Porencephalitis is a condition that occurs when the blood vessels in the brain and spinal cord become blocked, causing the brain to swell. This swelling can make it difficult for people to walk or move around freely. The exact cause of porencephalitis is not fully understood, but it may be caused by an infection, inflammation, or other factors. If left untreated, porencephalitis can lead to serious health problems such as strokes and seizures.