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“Parapsoriasis. Under this provisional name, Brocq in 1902 grouped several rare and unclassifiable dermatological types, characterized by nonpruriginous erythmato-squamous spots, extremely persistent and rebellious to all treatment. It is exclusively the objective appearance of these dermatoses which led to their mutual approximation to psoriasis. Their origin and character are unknown, hardly ever surmised, and probably […]