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Revista alergia México
On-line version ISSN 2448-9190
Abstract
ESPINOLA, Silvio and MORA, Dory. Type IV hypersensitivity to timolol. Rev. alerg. Méx. [online]. 2020, vol.67, n.3, pp.293-296. Epub June 02, 2021. ISSN 2448-9190. https://doi.org/10.29262/ram.v67i3.799.
Background:
In recent years, there have been reports of contact dermatitis due to the beta-blockers that are used in the treatment of glaucoma, such as timolol, levubonolol, carteolol, or betaxolol.
Case report:
A 37-year-old male patient, who was diagnosed with bilateral primary open-angle glaucoma two years ago, was in therapy with dorzolamide and a topical β-adrenergic blocker (timolol) in drops twice a day. Months later, he reported conjunctival hyperemia, stinging, and inflammation of both eyelids, followed by erythematous dermatitis, which improved upon treatment discontinuation. The patch test came back negative, but the conjunctival provocation test came back positive 48 hours later.
Conclusion:
Sensitization to the ophthalmic drops that are used to control glaucoma proved to be the mechanism that was causing the clinical picture of the patient. Performing a tolerance test for active anti-glaucoma agents may be helpful in improving tolerance to the medical treatment of some patients, thus, avoiding laser procedures and / or precipitated antiglaucomatous surgeries.
Keywords : Beta-blockers; Contact dermatitis; Glaucoma; Hypersensitivity; Tolerance test.