What could be the reason for having severe headache above your eye?
Diagnosing the cause of a headache depends on several factors. It could be related to muscle spasm as is seen with tension type headaches, sinusitis, raised intracranial pressure or even growths. Eye strain is another possible cause. You should see your doctor who can assess your case, take various factors like your medical history into account and possibly conduct further investigations to diagnose a cause.
You can find a list of causes in this article :