Allergic contact dermatitis and conjunctivitis from epinephrine

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Abstract
A patient with chronic open-angle glaucoma was suspected of having allergic dermatitis and conjunctivitis to epinephrine. He was tested with epinephrine and other active substances, the preservatives and antioxidants usually used in the preparation of eye drops. He was also tested with other possible contactants with which he had had contact. The patient showed positive allergic patch test reactions to the chloride solution of epinephrine. The patient showed an unexpected positive reaction when tested with di-isopropyl fluorophosphate (DFP). The importance of routine patch testing in ophthalmic practice to detect sensitizers in cases of contact allergy is stressed.

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