👉 Encephalalgia, also known as brain fog or cognitive fatigue, is a common symptom of many neurological conditions. It typically occurs when there are issues with the brain's ability to process and store information effectively. This can be caused by a variety of factors such as inflammation, infections, stroke, tumors, or even genetic disorders. Encephalalgia can cause feelings of confusion, disorientation, difficulty concentrating, memory loss, decreased cognitive function, and sometimes even hallucinations. It is