I have read your question ,
The Running nose symptoms you mentioned is quite like a symptom for sinusitis
, which generally results in the pain around the eyebrows or eye.
You said that you had a CT scan
, but that was 3 years ago , without physical check and medical history , it is not possible to explain you the real reason.
There are a few other relative issues , but after ruling out chronic ones ( Since you said the pain isn't constantly sharp) it could be migraine
I recommend you to check with and ENT Specialist
nearby to rule out all the possiblities.
Wishing you a good Health,