Bovine chamomile has long been used to treat fever, stomach pain, toothache, insect bites, infertility, rheumatoid arthritis, psoriasis, allergies, asthma, tinnitus, dizziness, nausea, tension headaches, and migraines.
I say its analgesic properties to be because of a biochemical called parthenolide. This chemical compound prevents the blood vessels in the head from constricting, which can cause severe headaches. Studies have shown that bovine chamomile has an impressive effect on reducing the severity, duration, and frequency of headaches, especially migraines.
As per Ayurveda Excessive Ruja (headache) may be due to multiple systemic involvements. Ahara vaisamya (Excessive alcohol intake), Vihara vaisamya Day time sleep), Pranavaha srotovikara (Kasa, Rajayakshma), Annavaha srotovikara (Ajirna), Rasavaha srotovikara ( Jwara), Majjavaha sroto vikara (Apatantraka), Mutravaha sroto vikara ( Asmari), Siroroga ( Anantavata, Ardhabhabhedaka, Suryavarta).So Shirodhara ( Milk + Water), Langhana will be more effective. Drugs possessing Rukshya property ( the quality of a substance which is responsible for dryness), ushna ( hot in potency), Pachana dravya (the process of digestive / metabolic transformation) , Nasya ( Sadbindu tail infused into the nostrils), Abhyanga ( Massage of dasamula tail over the head), Sirovasti ( therapeutic retention of Dasamula oil overhead region) yield significant benefit.
As per the question - remedy of chronic headache by herbal medicines are asked.
I have a different view on the topic (and also such other topics).
The common intention of the common people to get some drugs/medicines to get relief from all kinds of health problems is A TOTALLY WRONG CONCEPT AND TOTALLY WRONG ASSUMPTION.
The health problems created by the wrong lifestyle (include food style, drink style, sleeping style, rest style, working style, etc.) should be treated without any medicine.
If any medicine is given to treat such problems, many other more serious health problems may arise due to the intake of such medicines!
We should remember, all the medicines are having side effects and all the medicines will act as some poisons above a certain dose and use more than a certain time continuously.
For Histamin Headache (the said problem may be of this category), continuous use of anti-histaminic drugs and anti-inflammatory drugs may cause diseases like GASTRIC ULCER and also such many others.
Even herbal medicines for this disease, if any, should not be taken without the proper guidance of experts.
Then how the patients will get relief from the problem?
YOU KNOW THE ANSWER INSIDE YOUR BRAIN, I MAY REMIND IT.
REMOVAL OF THE ACTUAL REASON IS THE BEST WAY TO STAY AWAY FROM SUCH PROBLEMS.
Repair your defective lifestyle and follow a proper, restricted lifestyle [ sleep style, food style, drink style, working style, thinking style (as reduction of ambition to an easy achieveable limit), rest style, etc.] and you will get benefits with a few days.