Insomnia can cause a rapid heartbeat, insomnia causes a rapid heartbeat, mainly for the following reasons: 1, disorders of the plant nerve function, patients with insomnia will have disorders of the plant nerve function, appearing panic, rapid heartbeat. 2, insomnia patients who have a combination of anxiety, patients will also have panic, rapid heartbeat, and in some cases, chest tightness, near-death feeling. 3, if the patient is hypertensive, long-term The patient’s heart will be damaged by the increase in blood pressure, causing ischemic heart disease, and the patient will experience panic, rapid heartbeat, and sometimes chest tightness. 4.