Head aches or neck pain. You could sense problems like a ring about your head, pressing toward the entrance of one's skull. You may also have extreme migraines that make you sensitive to sounds and light. - Theft detectors, tag deactivators and RFID units, including People used at malls, libraries, and other general https://www.theorthopaedicandpainpractice.com/understanding-neck-pain-and-effective-treatments/