👉 Zonaesthesia is a medical condition that affects the brain and spinal cord. It occurs when there is an imbalance of blood flow to the brain, which can lead to pain or discomfort in certain areas of the body. The exact cause of zonaesthesia is not fully understood, but it is thought to be related to changes in blood flow within the brain and spinal cord. There are several causes for zonaesthesia, including neurological disorders such as stroke, tumors, and infections, as well as metabolic disorders like