This chronic headache is covered under SHIRSHOOL disease in Ayurveda.
This is vitiation of Kapha and Vata humors.
Best remedy for it is to use Shadbindu oil which is to be administered 2-3 drops in each
nostril in the early morning. It's very pungent. Be careful. You may increase to 6 drops slowly. If you can, you ll be winner.
Second thing is 'Shirshooladi Vajra Rasa' 2 pills to be powdered and mixed in pure honey and licked. Twice daily. Follow hot/ warm water sips.
Third thing is
Pathyadi Kwath liquid. 20ml + equal water twice a day before meals.
For proper and sound sleep and mental energy use
Ashwagandha and
Brahmi capsules 1 bid each.
Four weeks time will indicate the results itself. You may continue still if headache still occurs though frequency and intensity would be reduced by now.
No side effects, totally safe. But find out somewhere. In India its common to find at classical Ayurveda stores.
No heavy n spicy food please. Simple good, light food advised.
I not only hope but am sure that you will be 100% OK.