EE WAS PASSING UNDER A DOORWAY THAT WAS APPROX. 5 FEET HIGH. EE RAISED UP TOO SOON BEFORE PASSING BENEATH THE DOORWAY STRIKING HIS HEAD ON THE OVERHEAD FRAMEWORK OF THE DOOR. STRIKING HIS HEAD JARRED HIS NECK CAUSING A STRAIN TO HIS NECK. BECAUSE OF LINGERING PAIN AND HEADACHE, EE WAS TAKEN TO A DR ON 3-20-01 WHEN HE WAS PROVIDED PAIN MEDICATION AND RESTRICTIVE WORK DUTIES.