Extreme pain on left side of forehead, above the eye?

Need exam. Any pain defined as "extreme" should be evaluated by a medical physician in this case, as it is unlikely to be coming from the eye itself except in rare cases. Some people have an extreme stabbing brief pain which is a neuralgia (nerve pain). However, other more serious causes should be ruled out first.
Sinus or burst blood. This can be an acute frontal sinus but can also represent a ruptured berry aneurysm in the brain or spontaneous bleeding fro oral blond thinners even aspirin. It can also represent inlamed nerves in the face or head.