I believe one large reason for my headaches was overuse of Advil and Tylenol. I've stopped taking them for about 4 weeks now and it seems to have done the trick. If they return, I'll post my issues at that time. Thanks for the comment Dr Santos.
Hi,
It is good that the initial diagnostic test results were normal. According to naturopaths, sluggish liver or problem with liver function may present with a variety of symptoms including headache and fatigue. Diet modification such as low fat and low alcohol intake are usually recommended. However, if the headache persists, you may need to have this checked by your doctor for proper evaluation. Additional diagnostic tests may need to be done also. Take care and do keep us posted.