Why is blood pressure higher at night than in the morning?

High blood pressure at night than in the morning is generally caused by obstructive sleep apnea hypopnea syndrome, insomnia and dreaminess at night.

1. Obstructive sleep apnea hypopnea syndrome

due to airway stenosis, obesity, age and other factors, patients sleep at night airway ventilation deficiency, leading to intermittent hypoxia at night, blood pressure will rise, and then performance for high blood pressure at night than in the morning.

2. Insomnia and dreaminess at night

may be caused by strenuous exercise before bed, mental stress and other factors, sympathetic nerve stimulation, insomnia and dreaminess at night, will also cause high blood pressure.