Jaw snaps is a symptom where the jaw joint makes a popping sound when opened or closed. It is usually accompanied by a feeling of tightness and discomfort in the jaw joint. It may start off as a mild annoyance, but can become more frequent and intense over time. The snapping may be associated with pain, headaches, jaw locking, and difficulty chewing. It is important to seek medical attention if the symptom persists or worsens.