RT Book, Section A1 Pearson, David R. A1 J. Margolis, David A2 Kang, Sewon A2 Amagai, Masayuki A2 Bruckner, Anna L. A2 Enk, Alexander H. A2 Margolis, David J. A2 McMichael, Amy J. A2 Orringer, Jeffrey S. SR Print(0) ID 1161351453 T1 Cellulitis and Erysipelas T2 Fitzpatrick's Dermatology, 9e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9780071837798 LK accessmedicine.mhmedical.com/content.aspx?aid=1161351453 RD 2022/05/27 AB AT-A-GLANCECommon infection of the deep dermis and subcutaneous tissue most often caused by streptococcal and staphylococcal species, resulting in erythema, swelling, warmth, and pain of the affected site.Unilateral lower-extremity involvement is typical and systemic symptoms are usually absent.Important local risk factors include compromise of the skin barrier or underlying lymphovascular system.Diagnosis is most often made clinically because of frequently equivocal or negative workups.Treatment consists of antibiotics, but multiple recurrences may be observed.Common variants:Erysipelas: sharply demarcated, bright red, edematous plaques resulting from superficial lymphatic infiltration.Purulent cellulitis: localized pustules or abscesses associated with cellulitis.