Other common symptoms include dizziness, headache, tightness at the back of the neck, fatigue, and in severe cases, blurred vision, nosebleeds, and other symptoms. If the heart is involved there can also be chest tightness, shortness of breath, angina pectoris, polyuria, etc. It may also be caused by adverse reactions after taking antihypertensive drugs, so the above cases need to be identified. When the blood pressure is particularly high, the diastolic blood pressure is greater than or equal to 130 mmHg. This is called malignant hypertension, and symptoms such as headache, blurred vision, fundus bleeding, exudation, papilledema, kidney damage, proteinuria, hematuria, and tubular urine will appear, and blood pressure must be controlled or the prognosis is poor. Severe symptoms such as rapid heartbeat, panic, irritability, headache, dizziness, nausea, vomiting, shortness of breath, and blurred vision can also occur in the case of hypertensive crisis.