Thank you very much for contacting healthcare magic. According to your complain you have problem of headach at high blood pressure condition. Increase intracranial pressure cause severe headach. You are not mention a onset ,duration ,type ,character ,site and distribution of headach. Measure your blood pressure regularly. Mention a range of blood pressure. If blood pressure more than normal range than start antihypertention drugs under doctor s suggestion. Sometimes eye ear or sinus problem cause reffered pain . Intracranial artery cause traction pain.Vascular headach may rule out. Proper history and investigation give exact idea. MRI can done for further diagnosis. This all thing help in diagnosis. Consent a neurologist for further diagnosis. I hope my guidance helpful to you.. Take care. Thank you.