Serpentine, also known as New Jade, derives its name from the Latin word serpentis meaning snake like referring to the resemblance these green stones have to snake skin. This stone was used by the Romans to protect them from sorcery and was believed to protect against parasites, snakebite, venom and poison.
Sharp, stabbing pain near coccyx during period. Patient : I'm a fourteen year old girl, my periods are normal, and I don't have any medical problems. My period started yesterday, and almost exactly when my period started, a sharp, almost stabbing pain began near my coccyx area. It's like in the middle of my tailbone.
Watch: Coccydynia (Tailbone Pain) Video. In general, pain can by caused in the coccyx if an injury or some type of excess pressure on the area causes the bones to move beyond their normal very limited range of motion, resulting in inflammation and localized pain. An injury to either the ligaments or the vestigial disc may be a cause of pain. Rarely, the bones of the coccyx can fracture and cause pain. Also, in rare cases a tumor or infection in the coccyx can be a primary cause of tailbone pain.