Is blood pressure high in summer or winter?

In winter, due to the relatively low temperature in winter, blood vessels will expand with heat and contract with cold at this time, and blood vessels are prone to spasm, resulting in poor blood flow and increasing peripheral resistance. At this time, people's blood pressure will rise. In summer, because the temperature rises obviously, and then the blood vessels dilate, the peripheral resistance drops obviously at this time, and then the blood pressure drops. So generally speaking, the blood pressure rises obviously in winter and decreases obviously in summer, so we can see that some patients have high blood pressure in winter. At this time, we may have to take antihypertensive drugs or even adjust the dosage of antihypertensive drugs to control blood pressure to normal.