Thank you for posting your query at DoctorSpring.com.
First of all, I would like to reassure you that your episodic headache is not due to any serious cause, as both CT and MRI scans of the brain have been normal.
Based on the information given, the most likely cause for your symptoms could be trigeminal neuralgia, affecting the right trigeminal nerve. This nerve has three branches, your symptoms are in the ophthalmic division (also called as V1 division of the trigeminal nerve).
Initial treatment is with medications such as carbamazepine and oxcarbazepine tablets.
In some people who do not respond to these tablets, botox injections, radiation and surgery are other treatment options.
I hope it helps. Please get back if you have any more queries.
Dr. Sudhir Kumar MD (Medicine), DM (Neurology)
Senior Consultant Neurologist