In the jaw, the pain is often a feeling of discomfort, tightness or squeezing.
In some cases, it may be felt as a sharp or shooting pain.
Most commonly, this is associated with angina, arising from poor blood flow to part of the heart muscle.
Harvard Health states: “Although angina is commonly felt as pain, pressure, or heaviness in the chest, it can appear in many guises.
“The main nerve that carries pain signals from the heart, the vagus nerve, also communicates with the neck, jaw, and head, as well as the left arm.
“That means alarm signals from the heart can be felt elsewhere.”