Side sleep feeling head blood vessels jumping may be caused by blood pressure abnormalities, vascular malformation, autonomic dysfunction and other factors. 1. Abnormal blood pressure: When blood pressure increases suddenly, cerebral vasodilatation may occur, manifesting as throbbing blood vessels in the head. Immediate monitoring of blood pressure can be a clear diagnosis, which can be improved by taking long-acting antihypertensive drugs and adjusting the blood pressure. 2. Vascular malformation: when the temporal blood vessels have malformation, such as arteriovenous fistula, etc., when lying on the side, you can feel the symptoms of blood vessels beating in the head. 3. Autonomic dysfunction: the disease is related to irregular work and rest, mental and psychological stress, which can be manifested as the symptom of feeling the blood vessels in the head throbbing. The cause of feeling the blood vessels in the brain jumping when sleeping on the side is very complicated, need to be combined with the patient’s accompanying symptoms, improve the relevant examination, clear the cause of the disease under the guidance of the doctor’s systematic treatment.