👉 Polycyesis is a medical condition that occurs when the blood vessels in the brain and spinal cord are inflamed, leading to symptoms such as headache, fever, fatigue, and numbness. It can be caused by various factors including infection, autoimmune disorders, or certain medications. The exact cause of polycyesis remains unknown but it is thought to be multifactorial and may involve multiple systems in the body. Treatment typically involves antibiotics, pain management, and lifestyle changes to manage symptoms.