I will try my best to answer your query.
It is k/a sinusitis
. You don't have mucus in brain but you do have it in sinuses
, i.e. air cavities in the cranial bones, especially those near the nose.
Treatment includes steam inhalation, if it is due to allergens, avoidance of the allergens.
Saline nasal irrigation
, decongestants, antihistamines, and expectorants are appropriate for symptomatic relief.
Antibiotic will be helpful.
I advice you to meet ENT specialist
who will examine and prescribe you the right medicine.
Hope my answer will be helpful for you.