Unveiling allergic conjunctivitis: the role of skin prick tests and key risk factors

Aim: Allergic conjunctivitis (AC) is an inflammatory response of the conjunctiva triggered by exposure to common allergens, including pollen, dust mites, and animal dander. This study aimed to identify probable allergens in Iranian patients with AC. Methods: This cross-sectional study included individuals with AC from Southwestern Iran in 2024. Skin prick tests (SPTs) were performed using commercial extracts of various allergens, including tree mix, weed mix, grass mix, dust mite mix, fungi mix, as well as cat and cockroach allergens. Results: Among 92 patients with conjunctivitis, with a mean age of 23.66 ± 14.70 years, 80 patients (86.96%) had a positive SPT to at least one of the applied extracts. Sensitization rates detected by SPTs were as follows: weed mix 68.48%, tree mix 58.70%, grass mix 53.26%, dust mite mix 45.65%, cockroach 29.35%, fungi mix 22.83% and cat allergen 17.39%. A significant difference in dust mite sensitization was observed between patients with seasonal and perennial AC (p = 0.023). Conclusions: This study highlights the allergic sensitization of patients with conjunctivitis and its connections to other allergic conditions. Allergists can play a crucial role in managing conjunctivitis through comprehensive testing and holistic treatment approaches.