Hello and welcome to HCM,
Hypertension can cause persistent headache.
Headache is more common in
malignant hypertension.
Sinusitis can also cause headache but hypertension has to be ruled out in first place.
Thus, I suggest you to consult your treating physician for assessment of hypertension.
If blood pressure is high, the treatment may have to modified.
If blood pressure is controlled, then other causes of headache may have to be looked for.
Other causes of headache include sinusitis,
migraine,
cluster headache, refractive errors, high CSF pressure etc.
Thus, consult your physician for further work up.
Thanks and take care
Dr Shailja Puri