What is the best way to treat high bp coupled with severe headache?

Hypertension is best treated by medications. A variety of medications can be used and the doses adjusted according to response. The occurrence of headache in a patient with severe hypertension is related to the severity of the blood pressure elevation and can be alleviated by control of blood pressure. An experienced physician will look for potential correctable causes before using long-term drugs

If indeed your hypertension is causing a severe headache, this is a worrisome sign suggesting extremely high or malignant hypertension. In this situation, risk of intracranial hemorrhage is sky high, so, "BEST WAY" is to use antihypertensives and get blood pressure under control ASAP. Do not wait, act now, even go to Hospital ER if necessary.