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Photosensitive drug eruptions, polymorphous light eruption, chronic actinic dermatitis (CAD -includes the conditions previously called photosensitive eczema, actinic reticuloid and persistent light reaction). Photosensitivity dermatoses are caused either by an exogenous substance (either topical or systemic), or are idiopathic. These conditions initially present on sun-exposed skin, may be triggered by topical or systemic exposures, and […]