Airborne allergic contact dermatitis from pine dust

image Airborne contact dermatitis is a challenging entity that requires comprehensive patch testing and exposure review to diagnose accurately. image Four patients with airborne contact dermatitis and positive patch tests to colophony were evaluated. image Patch testing was performed on all patients using a modified European standard series plus additional applicable allergens. image All patients had positive patch tests to colophony and exposure to pine dust. image Patch testing is a critical element in the evaluation of patients presenting with an airborne pattern of contact dermatitis.