Well, if verapamil is helping then either you have tension headaches or high blood pressure related headaches or migraines. If vasculitis is suspected then anti-inflamamtory medications may help. Also, the cause of vasculitis should be looked into.
Other possibilities are pinched nerves in neck, TMJ, GERD, wax in ear etc. Please consult your doctor regarding this. Take care!
The medical advice given should not be considered a substitute for medical care provided by a doctor who can examine you. The advice may not be completely correct for you as the doctor cannot examine you and does not know your complete medical history. Hence this reply to your post should only be considered as a guiding line and you must consult your doctor at the earliest for your medical problem.