I have read your question,
Given the location on your eye brow, it is less likely to represent something from your paranasal sinuses
More likely is something that is unique to the brow itself, such as a stye
. These are bright red, painful, and sometimes itchy infections of the minor glands of your eyelid. Usually, they go away with time and moist, warm compresses.
Some people will have them persist, however, and will require further therapy as these slowly "burn out" and turn into harder, less inflamed but still present, masses of the eye lid.
These styes are not harmful and are temporary so you need not worry.
I recommend you to consult a physician nearby for further guidance .
Your doctor will be able to determine what exactly is occurring and make appropriate recommendations.
I Hope this Helps.