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Dermatology Dermatology Sixth Edition EDITEDBY Rachael Morris-Jones, FRCP, PhD, PCME DermatologyConsultant KingsCollegeHospital DenmarkHill London,UK Thiseditionfirstpublished2014©2014byJohnWiley&Sons,Ltd. ©1988,1993,1998,1999,2003,2009byBlackwellPublishingLtd BMJBooksisanimprintofBMJPublishingGroupLimited,usedunderlicencebyJohnWiley&Sons. Registeredoffice:JohnWiley&Sons,Ltd,TheAtrium,SouthernGate,Chichester,WestSussex,PO198SQ,UK Editorialoffices:9600GarsingtonRoad,Oxford,OX42DQ,UK TheAtrium,SouthernGate,Chichester,WestSussex,PO198SQ,UK 111RiverStreet,Hoboken,NJ07030-5774,USA Fordetailsofourglobaleditorialoffices,forcustomerservicesandforinformationabouthowtoapplyforpermissiontoreusethe copyrightmaterialinthisbookpleaseseeourwebsiteatwww.wiley.com/wiley-blackwell TherightoftheauthortobeidentifiedastheauthorofthisworkhasbeenassertedinaccordancewiththeUKCopyright,Designsand PatentsAct1988. 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LibraryofCongressCataloging-in-PublicationData ABCofdermatology/[editedby]RachaelMorris-Jones.–Sixthedition. p.;cm. Precededby:ABCofdermatology/editedbyPaulK.Buxton,Rachael Morris-Jones.5thed.2009. Includesbibliographicalreferencesandindex. ISBN978-1-118-52015-4(pbk.) I.Morris-Jones,Rachael,editorofcompilation. [DNLM:1. SkinDiseases. WR140] RL74 616.5–dc23 2013049508 AcataloguerecordforthisbookisavailablefromtheBritishLibrary. Wileyalsopublishesitsbooksinavarietyofelectronicformats.Somecontentthatappearsinprintmaynotbeavailableinelectronicbooks. Coverimage:Patientwithurticaria–photosuppliedbyDrRachaelMorris-Jones. CoverdesignbyAndyMeaden. Setin9.25/12ptMinionProbyLaserwordsPrivateLtd,Chennai,India 1 2014 Contents ListofContributors,vii Preface,ix Acknowledgements,xi 1 Introduction,1 RachaelMorris-Jones 2 Psoriasis,11 RachaelMorris-Jones 3 ManagementofPsoriasis,18 RachaelMorris-Jones 4 Eczema(Dermatitis),26 RachaelMorris-Jones 5 UrticariaandAngio-oedema,38 RachaelMorris-Jones 6 SkinandPhotosensitivity,42 RachaelMorris-Jones 7 DrugRashes,48 SarahWalsh 8 ImmunobullousandOtherBlisteringDisorders,55 RachaelMorris-Jones 9 ConnectiveTissueDisease,VasculitisandRelatedDisorders,62 RachaelMorris-Jones 10 TheSkinandSystemicDisease,70 RachaelMorris-Jones 11 LegUlcers,82 RachaelMorris-Jones 12 AcneandRosacea,89 RachaelMorris-Jones 13 BacterialInfections,97 RachaelMorris-Jones 14 ViralInfections,105 RachaelMorris-Jones 15 HIVandtheSkin,114 RachaelMorris-Jones v vi Contents 16 FungalInfections,121 RachaelMorris-Jones 17 InsectBitesandInfestations,128 RachaelMorris-Jones 18 TropicalDermatology,135 RachaelMorris-Jones 19 HairandScalp,144 KapilBhargavaandDavidFenton 20 DiseasesoftheNails,151 DaviddeBerker 21 BenignSkinTumours,161 RachaelMorris-Jones 22 PremalignantandMalignant,172 RachaelMorris-Jones 23 PracticalProceduresandSkinSurgery,183 RajMallipeddi 24 Lasers,IntensePulsedLightandPhotodynamicTherapy,191 AlunV.Evans 25 WoundManagementandBandaging,197 BernadetteByrne 26 Formulary,212 KarenWatson Index,221 List of Contributors Kapil Bhargava Raj Mallipeddi St.John’sInstituteofDermatology,Guy’sandSt.Thomas’Hospitals, London,UK CutaneousLaserandSurgeryUnit,St.John’sInstituteofDermatology, St.Thomas’Hospital,London,UK Bernadette Byrne Rachael Morris-Jones DepartmentofTissueviability,KingsCollegeHospital,London,UK DermatologyDepartment,KingsCollegeHospital,London,UK David de Berker Sarah Walsh DermatologyDepartment,UnitedBristolHealthcareTrust,Bristol,UK KingsCollegeHospital,London,UK Alun V. Evans Karen Watson DermatologyDepartment,PrincessofWalesHospital,Bridgend,UK DermatologyDepartment,OrpingtonHospital,Orpington,Kent,UK David Fenton St.John’sInstituteofDermatology,Guy’sandSt.Thomas’Hospitals, London,UK vii