RT Book, Section A1 Zlotoff, Barrett A1 Keck, Laura E. A1 Padilla, R. Steven A2 Soutor, Carol A2 Hordinsky, Maria K. SR Print(0) ID 1177004439 T1 Psoriasis and Other Papulosquamous Diseases T2 Clinical Dermatology YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9780071769150 LK dermatology.mhmedical.com/content.aspx?aid=1177004439 RD 2024/04/19 AB Psoriasis, seborrheic dermatitis, pityriasis rosea, and lichen planus are diseases that present with papulosquamous lesions (scaly papules and plaques). Although these diseases may have a similar morphology, their underlying etiologies vary. Secondary syphilis, cutaneous T-cell lymphomas, and connective tissue disease may also present with papulosquamous lesions and should be included in the differential diagnosis.