Excessive dopamine can cause excessive nerve excitement and rapid heartbeat. Even arrhythmia or high blood pressure. It can also cause excessive excitement in the heart and cause damage. Excessive dopamine will make patients in a state of excitement for a long time, resulting in insomnia, excessive mental excitement and other symptoms. Sleeping too long can lead to lack of sleep, headache, dizziness, head swelling and decreased ability to deal with things. The brain releases too much dopamine, which may be caused by mental factors. Dopamine is a neurotransmitter, which is mainly responsible for the mood of the brain. When you feel excited, happy and comfortable about something, something or someone, the dopamine concentration will increase. On the contrary, if the dopamine concentration increases, you will be more involved in these things. Generally speaking, moderate dopamine concentration can generate power, but too high dopamine concentration will be addictive.