these are caused by the inflammation of the mucous membranes lining the sinuses in the head. Many migraineurs falsely believe they have sinus headache because they experience pain in the facial and nasal areas.

a headache resulting from congestion or infection in the paranasal sinuses

a headache in the face, forehead, cheeks or around the eyes that comes during a 'cold'

a mere inconvience in the grand scheme of things