RASH (PAPULOSQUAMOUS)

Skin Rash (Papulosquamous and Related Types) Eczematous Pruritic/Scaly/Erythematous lesions Usually poorly demarcated Papulosquamous Erythematous or violaceous papules & plaques with overlying scale Examples: Psoriasis Well-demarcated plaques Thick silvery scale on elbows & knees Auspitz sign Koebner’s phenomenon Lichen Planus Purple, pruritic, polygonal, planar (flat-topped) papules On wrists/ankles/genitals Pityriasis Rosea Oval, tannish-pink or salmon-colored patches Plaques with scaling border in Christmas tree pattern on trunk Begins with a large lesion patch (Herald’s patch) Vesiculobullous Blisters containing non-purulent fluid Pustular Blisters containing purulent fluid Examples: Tinea (Ring Worm) Annular (ring-shaped) lesion Elevated scaling Red border, central clearing Reactive Reactive rash with various morphology Examples: Discoid Lupus Erythematosus Scarring and/or atrophic red/purple plaques White adherent scales on sun-exposed area *Indicates Key Condition This is not an exhaustive list of medical conditions.