Br J Dermato/2023,188:186-194BIDhttps://doi.or/10.1093/bjd/ljac042British Journal of DermatologyAdvance access publication date:1 November 2022GuidelinesBritish Association of Dermatologists guidelines for themanagement of people with cutaneous squamous cellcarcinoma in situ(Bowen disease)2022Ashish Sharma,Andrew J.Birnie,2 Cristina Bordea,3 Seau Tak Cheung,4 Jasmine Mann,5Colin A.Morton,6 Asad Salim,7 Zeeshaan-Ul Hasan,2 Maria Hashme,8 Zahra Mansour Kiaee,8M.Firouz Mohd Mustapa,Lesley S.Exton and on behalf of the British Association ofDermatologists'Clinical Standards UnitNottingham University Hospitals NHS Trust,Nottingham NG72UH,UK2East Kent Hospitals University NHSFT,Canterbury CT1 3NG,UKaKettering General Hospital NHSFT,Kettering NN16 8UZ,UK#Blackheath Hospital,London SE3 9LF,UKSUniversity Hospitals of Derby and Burton NHSFT,Derby DE22 3NG,UKNHS Forth Valley,Stirling Community Hospital,Stirling FK8 2AU,UKTallaght Hospital,Dublin D24 NROA,IrelandWillan House,British Association of Dermatologists,London W1T 5HQ,UKCorrespondence:Ashish Sharma.Email:guidelines@bad.org.ukProduced in 1999 by the British Association of DermatologistsReviewed and updated 2006,2014,2022Linked Article:Berking Br J Dermato/2023;188:166NICE has renewed accreditation of the process used by the British AssociationNICE accreditedof Dermatologists to produce clinical guidelines.The renewed accredita-tion is valid until 31 May 2026 and applies to guidance produced using theprocesses described in 'Updated guidance for writing a British Association ofwww.nice.org.uk/accreditationDermatologists clinical guideline:the adoption of the GRADE methodology2016.The original accreditation term began on 12 May 2010.More informationon accreditation can be viewed at www.nice.org.uk/accreditation.This is an updated guideline prepared for the British1.0 Purpose and scopeAssociation of Dermatologists(BAD)Clinical Standards Unit,which includes the Therapy Guidelines Subcommittee.The overall objective of the guideline is to provide up-to-Members of the Clinical Standards Unit who have con-date,evidence-based recommendations for the man-tributed are N.J.Levell (Chair,Therapy Guidelinesagement of squamous cell carcinoma (SCC)in situ.TheSubcommittee),B.McDonald (BAD Assistant Honorarydocument aims to:Secretary),A.Bardham,S.L.Chua,A.Daunton,H.Frow,I.Nasr,G.Petrof,A.Therianou,M.Hashme(BAD Informationoffer an appraisal of all relevant literature up to 13 AugustScientist),Z.Kiaee (BAD Guideline Research Fellow),L.S.2021,focusing on any key developmentsExton (BAD Senior Guideline Research Fellow)and M.F.address important,practical clinical questions relating toMohd Mustapa(Director of Clinical Standards).the primary guideline objectiveAccepted:26 September 2022The Author(s)2022.Published by Oxford University Press on behalf of British Association of Dermatologists.All rights reserved.For permissions,please e-mail:journals.pemmissions@oup.com