Brief Answer:
Priority is to find the cause of headache....

Detailed Answer:
Hi,

If your blood pressure remains normal on multiple occasions and you are now known to have hypertension, then I doubt raised blood pressure is the cause of headache. Contrarily, a severe headache can raise blood pressure numbers. Hence my first priority is to find the cause of headache.

A simplest and very safe measure to treat this headache is through paracetamol. Nevertheless it is still a medicine. If you don't wish to take medicines then one of the following measures can be adopted:
1. Sleep in a calm room. Keep the room lights and noise down to as minimal as possible.
2. Apply pepper mint oil on the forehead and wear a tight band over the head. Alternatively inhale pepper mint vapors.
3. Eat a high carb food. Chocolates and butter can be helpful options. Do not use it very frequently as it might affect your cholesterol and weight control.
4. Learn various massage techniques. You can try googling for videos to learn them.

If the cause is identified to be due to high blood pressure and if you have history of hypertension, then start physical exercise and low salt diet.

Hope this helped.

Regards

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