Causes of sudden high blood pressure up to 180 mmHg with generalized chills include cerebrovascular disease, pheochromocytoma, overexertion, and panic attacks. You should rest immediately, and at the same time lower your blood pressure quickly, effectively and safely. If necessary, consult a doctor in time. If the increase in blood pressure is accompanied by dizziness, nausea, slurred speech, unfavorable limbs, etc., you should immediately call an ambulance and go to the hospital immediately. If you have been diagnosed with high blood pressure and there are medicines around to treat high blood pressure, you can take short-acting antihypertensive medicines to lower your blood pressure, such as captopril and sodium nitroprusside. Generalized cold shivering should pay attention to keep warm, relax, quiet rest. If it is a panic attack, you can take eszopiclone to relieve the symptoms. Usually should avoid too much emotional excitement. Drugs should be used under the guidance of a physician.