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Conditions reviewed included: pyoderma gangrenosum; necrotising fasciitis; genital herpes; Marjolin ulcer, Rosai\u2013Dorfman disease; vascular disease; coagulopathies; calciphylaxis; trauma and surgical wounds; pilonidal cysts; graft-versus-host disease; hidradenitis suppurativa; Stevens\u2013Johnson syndrome; epidermolysis bullosa; radiation wounds; spider bites; and end-of-life skin failure pressure ulcers (also known as Kennedy ulcers). Although commonly recognised and diagnosed, stage 2, 3 and 4 PIs occasionally prove to be difficult to pinpoint, with undefined characteristics and similarities in presentation to several other conditions. Therefore, it is clinically vital to be aware of their appearance, risk factors and aetiology in order to make an appropriate patient assessment and avoid misdiagnosis. <\/jats:p>","DOI":"10.12968\/jowc.2023.32.sup9.s22","type":"journal-article","created":{"date-parts":[[2023,9,8]],"date-time":"2023-09-08T17:14:05Z","timestamp":1694193245000},"page":"S22-S36","source":"Crossref","is-referenced-by-count":2,"title":["Differential diagnosis of stage 2, 3 and 4 pressure injuries of the pelvis and lower extremity: a case series"],"prefix":"10.12968","volume":"32","author":[{"given":"Jennifer","family":"Caudill","sequence":"first","affiliation":[{"name":"University of Toledo, College of Medicine and Life Science, Department of Surgery, Toledo, Ohio, US"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tim","family":"Chrisman","sequence":"additional","affiliation":[{"name":"University of Toledo, College of Medicine and Life Science, Department of Surgery, Toledo, Ohio, 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