Let me tell you that headache can be due to many causes like migraine, tension headache
, tumor in the brain, problems in the blood vessels in the brain, high blood pressure
. Other cause could be cervical spondylosis
, occipital neuralgia
etc. Associated symptoms can also help us narrow down the possibility. These are presence/absence of vomiting, loss of consciousness
, weakness of limbs, hand or leg pains.
The possibility in your case could be 1. Cervical spondylosis 2. High Blood pressure 3. Migraine
You need evaluation by a physician including scan. If these are normal, you will benefit with medications like amitryptiline, gabapentine etc.
Hope this helps