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.
You should follow all instructions given by your doctor or pharmacist carefully. 1  For allergies and itching: Adults: The usual starting dose is one tablet three times a day. Depending on your response, the dose may need to be changed. 2  For migraines and vascular types of headaches: The usual starting dose is one tablet.