TY - CHAP M1 - Book, Section TI - Keratosis Pilaris and Other Follicular Keratotic Disorders A1 - Bruckner, Anna L. A2 - Kang, Sewon A2 - Amagai, Masayuki A2 - Bruckner, Anna L. A2 - Enk, Alexander H. A2 - Margolis, David J. A2 - McMichael, Amy J. A2 - Orringer, Jeffrey S. PY - 2019 T2 - Fitzpatrick's Dermatology, 9e AB - This chapter discusses conditions with the common finding of follicular keratosis, defined as orthokeratosis of the follicular ostium and infundibulum. Keratotic plugs protrude from the orifices, producing a rough sensation on palpation of the skin. Keratosis pilaris (KP) is a common, benign form of follicular keratosis; less common variants are associated with follicular inflammation, atrophy, scarring, alopecia, and in rare cases noncutaneous abnormalities. Trichodysplasia spinulosa (TS), a recently described, virally induced follicular dysplasia with similar findings, is also reviewed. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/10/11 UR - accessmedicine.mhmedical.com/content.aspx?aid=1161331064 ER -