encephalitis lethargica

Encephalitis lethargica, also known as "sleeping sickness," is a rare brain inflammation that affects the midbrain and other areas, leading to symptoms like extreme drowsiness, confusion, and movement difficulties. It often occurs after infections and can vary from mild to severe. Some individuals recover fully, while others experience long-term neurological issues, including movement disorders similar to Parkinson's disease. Though its exact cause is unknown, it was notably linked to an influenza pandemic in the early 20th century. Treatment focuses on managing symptoms, but no specific cure exists, making early diagnosis crucial to improve outcomes.