I sum times get 2 headaches at once. It is usually a migraine along with a sinus or tension headache. It took me awhile to figure it out. But I tested light and sound and I figured out the two pains where from 2 different headaches. So I took my relpax for the migraine and some tylenol/sinus meds for the sinus headache. Of course with my relpax I slept for awhile and woke up fine.