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.
1 Antihistamines, such as diphenhydramine (Benadryl). 2  This drug is given in an IV or in a muscle to rapidly reverse the actions of histamine. 3  Oral diphenhydramine is usually enough for a less severe reaction.here are many types of anti-allergy medications. The choice of medication and how it is given depends on the severity of the reaction. For relief of long-term allergies such as hay fever or reactions to dust or animal dander, the following medications may be recommended or prescribed: