Pine pollen allergy in northern Arizona

Area of Science:

• Allergy and Immunology
• Environmental Health

Background:

• Pine pollen allergy is often considered uncommon and clinically insignificant.
• Previous research has not extensively documented the prevalence and clinical impact of pine pollen allergy.

Purpose of the Study:

• To investigate the prevalence of skin test sensitivity to pine pollen antigen in an atopic patient population.
• To characterize the clinical manifestations and demographic profile of patients with confirmed pine pollen allergy.

Main Methods:

• Skin prick testing was performed on approximately 826 atopic patients in a northern Arizona allergy practice.
• Patients with positive skin test reactions to ponderosa pine and Colorado pinyon pine antigens were identified.
• Clinical symptoms, including rhinoconjunctivitis and asthma, were recorded.

Main Results:

• 12 out of 826 (1.5%) atopic patients showed skin test sensitivity to pine pollen antigen.
• All 12 reactors were residents of the area for at least 2 years.
• Eight patients experienced spring rhinoconjunctivitis, four had perennial symptoms, and four also had asthma.
• Reactions were primarily to ponderosa pine, with some cross-reactivity to Colorado pinyon pine.

Conclusions:

• Pine pollen allergy is more prevalent than previously assumed in certain geographic areas.
• Clinical symptoms associated with pine pollen allergy can include rhinoconjunctivitis and asthma.
• Further research is warranted to understand the full clinical significance and management of pine pollen allergy.