What symptom would most likely indicate sensitivity to Juniperus ashei pollen?

Sensitivity to Juniperus ashei pollen, commonly known as cedar pollen, typically manifests through respiratory symptoms. Nasal congestion and rhinorrhea—characterized by a runny nose—are classic signs of a type of allergic reaction known as allergic rhinitis. When individuals are exposed to pollen from Juniperus ashei, which is prevalent in certain regions, they may experience these specific symptoms due to the body's immune response to the allergen.

This response triggers inflammation of the nasal passages, leading to congestion, increased mucus production, and the sensation of a runny nose. These symptoms are especially pronounced during the pollen season when exposure is highest, distinctly aligning with what is expected in a case of pollen sensitivity.

Other symptoms such as skin rashes or gastrointestinal distress are not typical presentations associated with pollen allergies and are more indicative of other types of allergic reactions or conditions. Headaches, while they may occur in some allergic individuals, are often secondary to primary symptoms like nasal congestion rather than a direct response to the pollen itself. So, the presence of nasal congestion and rhinorrhea serves as the most direct and relevant indicator of sensitivity to Juniperus ashei pollen.