👉 Hemidiasthesia, also known as hemidiesthesia or hemidiastism, is a condition in which one side of the body does not produce the normal functioning of the other side. This can result from various causes such as brain damage, spinal cord injury, or neurological disorders. In this condition, there are usually no signs or symptoms on the affected side. However, when the hemidiasthesia occurs, it often leads to a noticeable difference in how the body