Hi welcome to HCM
I can understand you concern for your
constant headache Dear , inspite of all tests normal , there are many factors causing you the problem ,main are anxiety ,
sleeplessness ,
constipation ,
dehydration , indigestion- gas environmental triggers as hot or cold weather so on and so forth .
Many of these factors can be taken care of by modifying your life style and food habits . Only medicines will not help cure
Take balanced diet including all essential nutrients - minerals and Antioxidants .
To detox the body , consume sufficient water and regular physical activity
- walk- yoga ,pranayam - deep breathing , and proper sleep ,
meditation are all helpfull in maintaining trouble free life .
Avoiding anxiety , sleeplessness , fried ,fast foods ,.tea coffee , alcohol smoking ,constipation and sadentry life style will help further .
If problem persists ,consult your doctor .
Hope this helps solve your query
All the best .