The most practical way to control hay fever is to:

Treating the patient is the most practical way to control hay fever because it directly addresses the symptoms and the individual's reaction to allergens. Hay fever, or allergic rhinitis, is primarily caused by the immune system's hypersensitivity to airborne substances such as pollen, dust, or mold. By focusing on the treatment of the patient, healthcare professionals can provide symptomatic relief through medications such as antihistamines, nasal corticosteroids, and other therapeutic approaches that specifically help to alleviate symptoms.

In practice, these treatments can be easily administered and can lead to a significant improvement in quality of life, allowing patients to continue daily activities without being overwhelmed by their symptoms. This individualized approach is often more feasible and effective in managing hay fever compared to modifying environmental factors or relocating the individual.

While treating the environment or relocating to a different area can help reduce exposure to allergens, these options may not always be practical or possible for everyone. For example, environmental modifications can require significant changes and investments in home management, and relocating is typically not a feasible solution for managing a commonly occurring condition like hay fever. Therefore, treating the patient is often the most direct and effective method for controlling the symptoms associated with hay fever.