RT Book, Section A1 Murtagh, John A1 Murtagh, Clare SR Print(0) ID 1201937892 T1 D T2 John Murtagh’s General Practice Companion Handbook, 8th Edition YR 2022 FD 2022 PB McGraw-Hill Education (Australia) Pty Ltd PP Sydney, Australia SN 9781743768266 LK murtagh.mhmedical.com/content.aspx?aid=1201937892 RD 2024/04/23 AB Dandruff (pityriasis capitis) is mainly a physiological process, the result of normal desquamation of scale from the scalp. It is most prevalent in adolescence and worst around the age of 20.