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Epidemiology: Light-skinned patients and patients susceptible to allergy arefrequently affected.
Etiology: Contact eczema is caused by an antigen – antibody reaction inpatients with intolerance to certain noxious substances. Cosmetics, adhesivebandages, or eyedrops and eye ointments are often responsible, particularlythe preservatives used in them such as benzalkonium chloride.
Symptoms: Reddening, swelling, lichenification, and severe itching of theskin of the eyelid occur initially, followed by scaling of the indurated skin with a sensation of tension (Fig. 2.10).
Treatment: This consists of eliminating the causative agent. (Allergy testingmay be necessary.) Limited use of corticosteroids usually brings quick relief of symptoms.
Prognosis: The prognosis is good if the cause can be identified.
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