“What is the fastest way to relieve a tension headache?”

In my experience, most tension headaches originate from the suboccipital muscles at the base of your skull and where the trapezius muscles insert. Try stretching, heat, and massaging the trapezius and suboccipital muscles. If that doesn’t work, try ice at the base of the skull. Manipulation of the upper neck by a skilled healthcare provider such as a chiropractor is also very effective at reducing tension headaches. Ibuprofen or acetaminophen can also be very helpful if you can take that. Try to relax and calm the nervous system.

I hope this info is helpful.
Take care and be well.
Dr. Eric Miller- Orland Park, IL

You need to correct the cause to get them under control. See a chiropractor and the headaches will become almost nonexistent.