Sponsored Topics. Marshfield is a city in Webster County, Missouri, United States. The population was 5,720 at the 2000 census. It is the county seat and part of the Springfield, Missouri Metropolitan Statistical Area. Marshfield was settled in 1830.
Another common cause of sinus headaches is allergic rhinitis (hay fever). Both prescription and nonprescription (over-the-counter, or OTC) oral medications â antihistamines, decongestants and corticosteroids â are used to treat it. 1  Antihistamines.
That may leave you running for over-the-counter (OTC) allergy relief medications. Among the most popular OTC allergy meds are loratadine (brand name: Claritin) and cetirizine (brand name: Zyrtec). These two allergy medicines (also called antihistamines) produce very similar results. They both calm your bodyâs immune system reaction to an allergen.