RT Book, Section A1 Murtagh, John SR Print(0) ID 1124409660 T1 | D | T2 Murtagh's General Practice Companion Handbook, 6e YR 2019 FD 2019 PB McGraw-Hill Education PP Sydney, Australia SN 9781743760048 LK murtagh.mhmedical.com/content.aspx?aid=1124409660 RD 2024/03/29 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.