What Causes Frequent Blinking Of The Eye Followed By Headache?

MY EYES ARE BLINKERING FREQUENTLY AND SOME TIMES SO HAPPENS THAT I AM NOT ABLE TO OPEN THE EYES AND SOME TIMES GIVING SOME TYPE OF HEAD PAIN ON THE BOTH SIDES AS WELL AS ON THE TOP. BRAIN SCAN REPORT SHOWS NORMAL, GONE FOR ALL MOST ALL TYPE OF TEST AND FOUND NORMAL EVEN TAKEN BOTOX IN THE EYE LEAD BY LV PRASAD EYE HOSPITAL, GONE FOR EMINENT NEORO MEDICINE DOCTORS AND EYE DOCTORS BUT STILL IT IS NOT GOING. DOCTORS ARE SAYING IT IS DUE TO SPASM AND EFFECT OF ONE MAIN MUSSLE WHICH IS GIVING YOU THIS DISCOMFORT. SOME TIMES I FEEL FALLING LIKE WHILE WALKING BUT NOT FALLEN DOWN TILL SO FAR. I AM DOING ALL MY WORK BY MYSELF ALONE BUT THIS DISCOMOFT IS ALWAYS DIPRESSING ME, PLEASE SUGGEST CAUSE ANMD MEDICINE OR REMEDY IF ANY.