Palpitations causing nerve swelling and pain in the temples may be related to mental overstress, or may be caused by insufficient blood supply to the brain, cardiac neurosis, etc. 1. Excessive mental tension: When palpitations (rapid heartbeat, often accompanied by panic) occur, they are often accompanied by mental anxiety and tension. The bad mental mood causes the brain nerves to be in a state of excessive tension for a long time, which may cause the temple nerve swelling and pain. 2. Insufficient blood supply to the brain: when palpitations occur, patients often experience rapid heartbeat and panic attacks, which can easily cause arrhythmia, resulting in a decrease in the amount of blood ejected from the heart, and the corresponding cardiac output will be reduced, resulting in insufficient blood supply to the brain, which can cause pain and distension of the nerves in the temples. 3. Cardiac neurosis: when the disease attacks, it can lead to palpitation symptoms, and may be accompanied by temple nerve distension, usually due to psychological stress reaction, poor mood and other factors caused by neurological dysfunction. Palpitations causing pain and swelling of the nerves in the temples may also be related to other factors. If the symptoms persist, consult a doctor as soon as possible to identify the cause and get treatment under the doctor’s supervision.