The ear is a micro-system of the body, so points relating to every part of the body can be found there. Ear points can be used to treat a sore tooth, or lower back pain, or help to lower blood pressure. A well-known use of auricular acupuncture is the NADA protocol, which uses 5 points to treat addictions and has been very successful for tobacco and drug addictions. Another protocol is Battlefield Acupuncture, which works on chronic pain. Small needles are used to stimulate the ear points and ears seeds are used as a take-away treatment to prolong treatment effects. Ear seeds have an adhesive plaster with a tiny steel ball attached, to keep the ear points stimulated for between 5-7 days.