Insomnia, rapid heartbeat. What's going on?

Insomnia is the most common sleep problem. The causes of insomnia include physical causes such as joint pain, muscle pain, palpitations, shortness of breath, cough, itching and frequent urination. Sleep apnea syndrome also belongs to this category. Therefore, patients with insomnia and rapid heartbeat are considered to be physical causes of insomnia. The causes of insomnia also include physiological causes: Such as time difference, vehicle, plane sleep environment changes, bedroom light, noise, room temperature is too high or too low; psychological reasons, anxiety depression with insomnia, anxiety to sleep difficulties, depression to wake up early in the morning; mental reasons, mental diseases such as schizophrenia, reactive psychosis; drug reasons, central stimulants and long-term use of sleeping pills caused by sudden withdrawal.