TY - CHAP M1 - Book, Section TI - Psoriasiform Dermatitis A1 - Fried, Isabella A1 - Barnhill, Raymond L. A2 - Barnhill, Raymond L. A2 - Crowson, A. Neil A2 - Magro, Cynthia M. A2 - Piepkorn, Michael W. A2 - Kutzner, Heinz A2 - Desman, Garrett T. PY - 2020 T2 - Barnhill's Dermatopathology, 4e AB - Inflammatory dermatoses may be categorized based on the pattern of inflammation1 and epidermal changes.2 With psoriasis as the prototype, the psoriasiform dermatitides are characterized by regular elongation of rete ridges.3 This may result from increased keratinocyte proliferation due to more rapid turnover of stem cells or an increased pool of proliferating cells. Epidermal thickening may affect any or all of the layers of the epidermis. The stratum corneum may be thickened (hyperkeratosis) and may retain nuclear remnants (parakeratosis). Thickening of the granular layer or spinous layer is termed “hypergranulosis” or “acanthosis,” respectively. SN - PB - McGraw Hill Education CY - New York, NY Y2 - 2024/03/29 UR - dermatology.mhmedical.com/content.aspx?aid=1178387863 ER -