Hello! Welcome on HCM! I carefully passed through your question and would explain that your blood pressure values (especially diastolic blood pressure) are high and the headache is related to high blood pressure. If the blood pressure is lowered, the headache will probably get better. I would like to have some more information about your actual antihypertensive therapy. I recommend taking captopril 1 tab under your tongue to lower your blood pressure. If you do not have this drug, you should take another dose of the antihypertensive drug you use usually in this time of the day (double the dose). If high blood pressure persists in these values, I would recommend going to the ER for a careful physical check up, some blood lab tests and the proper therapy. It is necessary consulting with your GP to make further tests to investigate for the possible cause of uncontrolled high blood pressure, as this is not normal considering your young age. I would recommend performing: - thyroid hormone tests for possible thyroid dysfucntion - cortisol and aldosteron plasma levels for possible adrenal gland dysfunction - urinary metanephrines for possible pheochromocytoma - an abdominal ultrasound to examine the blood flow in the renal arteries - further blood lab tests ( kidney and liver function tests, fasting glucose, blood electrolytes, PCR, sedimentation rate). You should discuss with your doctor on the above possibilities. Hope you will find this answer helpful! Greetings! Dr. Iliri