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.
Treatment for allergy-induced asthma. If your child's asthma is triggered or worsened by allergies, your child may benefit from allergy treatment as well. Allergy treatments include: Omalizumab (Xolair). This medication is specifically for people who have allergies and severe asthma.