Grinding of teeth is a common symptom that can manifest in different ways. It is characterized by the rhythmic clenching and unclenching of the jaw, resulting in a grinding or gnashing sound. It can happen during the day or at night, and is sometimes associated with stress or anxiety. It can also cause pain in the jaw, headaches, and soreness in the face or neck. Long-term grinding of teeth can lead to serious dental problems, such as worn-down teeth and jaw misalignment.