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Parapsoriasis en Plaque. Presented by LCDR D. L. Baxter, MC, USN, and LT B. J. Johnson, MC, USN.
The patient is a 34-year-old white man. For the past ten years he has been aware of a red area in the left groin. This has been asymptomatic except for slight itching in hot humid weather. It has been persistent. Moderate scaling has been noted. The size of the area has been static for the past three years. A fibroma was removed from the anterior chest wall in 1949.
In the left groin a macular, erythematous area extends from one inch above the pubis laterally to the iliac crest including the medial and anterior aspects of the left thigh. Scrotal skin is not involved. The lesion is erythematous and appears atrophic centrally with a crinkling effect. No induration, tenderness, or associated lymphadenopathy are noted. General physical examination is well within normal limits.
PHILADELPHIA DERMATOLOGICAL SOCIETY. Arch Dermatol. 1963;88(2):231–234. doi:10.1001/archderm.1963.01590200119031
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