The NHS highlights that jaw clicking, often experienced while chewing or yawning, is primarily related to a condition known as Temporomandibular Disorder (TMD). While this condition is common and generally not serious, it can lead to discomfort and pain in some individuals. Symptoms of TMD include clicking sounds, jaw locking, pain around the jaw and temple area, and difficulty in fully opening the mouth. Most instances of TMD resolve naturally, though monitoring symptoms is crucial.