A patient with a photosensitivity dermatitis to quinethazone who previously had similar reactions to chlorothiazide and hydrochlorothiazide is reported. Administration of the drug resulted in a flare of the eruption and light testing at this time demonstrated a decrease in the erythema threshold. This probably represents an allergic cross-sensitivity. Initial photosensitization with quinethazone, however, has not yet been reported.
MILLER RC, BELTRANI VS. Quinethazone Photosensitivity Dermatitis. Arch Dermatol. 1966;93(3):346–347. doi:10.1001/archderm.1966.01600210082014
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