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.
Treating Dog Allergies. Dog allergies can be treated with standard allergy drugs. Your doctor might recommend: 1  Antihistamines, which block the effects of a chemical that triggers dog allergy symptoms; they're sold over the counter -- like Allegra, Claritin, Benadryl, or Zyrtec -- or by prescription.2  Some antihistamines such as Astelin are available as nasal sprays.our doctor might recommend: 1  Antihistamines, which block the effects of a chemical that triggers dog allergy symptoms; they're sold over the counter -- like Allegra, Claritin, Benadryl, or Zyrtec -- or by prescription.