I have had life threatening headaches (bilateral head and facial pain) every day, ALL day, for the last 8 yrs (possible trigeminal neuralgia) . I have unsuccessfully tried everything with no relief, but last summer I had an internal coccyx adjustment performed which surprisingly gave me approx. 75% relief for 3 whole months. Could a hooked coccyx actually tighten my duramater sheath to cause this amount of pain. After all...this is NOT an ordinary headache. Thanks in advance!