Final answer:
To treat symptoms of allergic rhinitis such as watery eyes and a runny nose, antihistamines, decongestants, and other substances that manage mucus production and coughing can be effective. These medications help alleviate symptoms, and avoidance of allergens is also advised.
Step-by-step explanation:
The student question pertains to substances that are effective for symptoms such as watery eyes and a runny nose, which are commonly associated with conditions like allergic rhinitis, more commonly known as hay fever. This condition is an immune response to harmless substances like pollen, treated with various medications.
Treatments for Allergic Rhinitis:
Typical treatments for allergic rhinitis include antihistamines that help reduce or block histamines, thus relieving allergic symptoms such as itchy and watery eyes, runny nose, and sneezing. Decongestants are another class of drugs that can relieve stuffiness and congestion. They work by narrowing blood vessels and reducing swelling in the nasal passages. Meanwhile, substances that enhance the production of mucus and phlegm or suppress coughing can help manage symptoms that come with the allergy, like postnasal drip and coughing.
In severe cases, corticosteroids prescribed by a doctor can help control inflammation associated with allergic rhinitis. Additionally, lifestyle changes and avoidance of known allergens are important steps in managing symptoms.