I may or may not do an MRA of the brain and/or the neck, which is blood vessels - to check the blood vessels of the brain and neck. That depends on the history the patient gives me. I sometimes do an MRI of the cervical spine (the neck spine), again - it depends on the history the patient gives me. If their headaches tend to come from the neck upward or are triggered by certain neck movements, I may consider doing that. I may consider doing a lumbar puncture depending on the history the patient gives me or the type of headaches they're having - positional, stuff like that. If it's an atypical headache or there's a very strange presentation, I may consider doing an EEG. The diagnosis is made basically by clinical exam and ruling out any other possible causes to headaches or head pain.