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.
Tailbone Pain Causes. Activities that put prolonged pressure on the tailbone, such as horseback riding and sitting on hard surface for long periods of time may cause the onset of pain. Tailbone pain due to these causes usually is not permanent, but if the inflammation and symptoms are not managed, the pain may become chronic. People with tailbone pain most often complain of pain in and around the coccyx without significant low back pain, pain radiation or referral of pain to other areas.