The weather suddenly turns cold, friends suffering from hypertension, please note that due to the cold weather, vascular contraction, may be better controlled blood pressure fluctuations, so we should monitor diligently, especially when dizziness and headache, if the blood pressure increases significantly, if necessary, the amount of appropriate increase in antihypertensive drugs or combined with another antihypertensive drugs synergistic antihypertensive. It is also recommended that patients with high blood pressure take antihypertensive drugs after waking up, and then get up slowly after half an hour, so as not to move too fast and fall down and fracture due to insufficient blood supply to the brain.