Migraine is not just a bad headache. It’s a disabling neurological disease with different symptoms and different treatment approaches compared to other headache disorders. A true sinus headache, called rhinosinusitis, is rare. The cause is a viral or bacterial sinus infection characterized by thick, discoloured nasal discharge. You’ll get symptoms like possibly weaker smell or no smell, facial pain or pressure and commonly, fever. Facial pain and headache should resolve within seven days after viral symptoms improve or after successful treatment with antibiotics (if a bacterial sinus infection is present). headache associated with the inability to function normally at work, school, home or social functions, nausea, sensitivity to light and triggers such as weather change, menstrual cycle, and stress (all common triggers for migraine). Significantly, it is commonly thought that weather change often causes “sinus headache” when weather change is a common trigger for migraine.