Erysipelas

[1][2][3] Erysipelas is usually caused by the bacterium Streptococcus pyogenes, also known as group A β-hemolytic streptococci, which enters the body through a break in the skin, such as a scratch or an insect bite.Affected individuals may develop a fever, shivering, chills, fatigue, headaches and vomiting and be generally unwell within 48 hours of the initial infection.[7] More severe infections can result in vesicles (pox or insect bite-like marks), blisters, and petechiae (small purple or red spots), with possible skin necrosis (death).[8] The infection may occur on any part of the skin, including the face, arms, fingers, legs and toes; it tends to favour the extremities.[7] The infecting bacteria can enter the skin through minor trauma, human, insect or animal bites, surgical incisions, ulcers, burns and abrasions.There may be underlying eczema or athlete's foot (tinea pedis), and it can originate from streptococci bacteria in the subject's own nasal passages or ear.[2] Tests, if performed, may show a high white cell count, raised CRP or positive blood culture identifying the organism.[11] Erysipelas must be differentiated from herpes zoster, angioedema, contact dermatitis, erythema chronicum migrans of early Lyme disease, gout, septic arthritis, septic bursitis, vasculitis, allergic reaction to an insect bite, acute drug reaction, deep vein thrombosis and diffuse inflammatory carcinoma of the breast.
Streptococcus pyogenes
Erysipelothrix rhusiopathiaeSpecialtyDermatologyinfectious diseaselymphatic vesselsraisedred rashcellulitisStreptococcus pyogeneserysipeloidshiveringchillsfatigueheadachesblisterspetechiaenecrosisLymph nodeslymphedemalymphoedemaStaphylococcus aureusStreptococcus agalactiaeeczemaathlete's footexotoxinhigh white cell countblood cultureherpes zosterangioedemacontact dermatitisinflammatory carcinoma of the breastserous fluidantibioticsamoxicillin/clavulanic acidcefalexincloxacillinbacteremiaseptic arthritisGlomerulonephritisrheumatic feverdiabetesvenous insufficiencyNecrotizing fasciitisArchibald Douglas, 6th Earl of AngusJohn of the CrossMarin MersenneMargaret ThrockmortonMichiel de RuyterChristina, Queen of SwedenNorborne Berkeley, baron de BotetourtPrincess Amelia of the United KingdomGrand Duchess Catherine Pavlovna of RussiaSir George Beaumont, 7th BaronetWilliam WirtUnited States Attorney GeneralCharles LambPrince Augustus Frederick, Duke of SussexKing George IIIBarbara HoflandPope Gregory XVIMary LyonMarie, Dowager Duchess of Saxe-Coburg-GothaJohn Herbert WhiteJames S.Ellen G. WhiteRalph BullockFrederick VII of DenmarkJohn TimonNehemiah BushnellJohn Stuart MillMarcus ClarkeJohn BrownMihai EminescuPat KillenSamuel Augustus WardJohann MostJames Anthony BaileyYūjirō MotoraGeorge Herbert, 5th Earl of CarnarvonMiller HugginsFather Solanus CaseyblessedRoman Catholic ChurchRichard WagnerJair BolsonaroMartovErnest HemingwayD. H. LawrenceSons and LoversArthur Conan Doyleshort storyThe Adventure of the Illustrious ClientSherlock HolmesAnton ChekhovWard No. 6tsaristJ. G. FarrellThe Siege of KrishnapurMark TwainRoughing ItDashiell HammettThe Thin ManWilla CatherOne of OursDownton AbbeyRodrigo Souza LeãoBenzathine benzylpenicillinIron(III) chlorideThe LancetDiseasesDBMedlinePluseMedicineBacillotaInfectious diseasesBacterial diseasesBacilliLactobacillalesStreptococcusoptochinS. pneumoniaePneumococcal infectionViridans streptococciS. mitisS. mutansS. oralisS. sanguinisS. sobrinusS. anginosus groupbacitracinS. pyogenesGroup A streptococcal infectionStreptococcal pharyngitisScarlet feverCAMP testS. agalactiaeGroup B streptococcal infectionStreptococcus iniaeCutaneous Streptococcus iniae infectionStreptococcus bovisEnterococcusEnterococcus faecalisUrinary tract infectionEnterococcus faeciumBacillalesStaphylococcusS. aureusStaphylococcal scalded skin syndromeToxic shock syndromenovobiocinS. epidermidisS. saprophyticusBacillusBacillus anthracisAnthraxBacillus cereusFood poisoningListeriaListeria monocytogenesListeriosisClostridiaClostridiumClostridium botulinumBotulismClostridium tetaniTetanusClostridium perfringensGas gangreneClostridial necrotizing enteritisClostridioidesClostridioides difficilePseudomembranous colitisFinegoldiaFinegoldia magnaMollicutesMycoplasmataceaeUreaplasma urealyticumUreaplasma infectionMycoplasma genitaliumMycoplasma pneumoniaeMycoplasma pneumoniaAnaeroplasmatalesBacterial skin diseaseGram +veImpetigoCutaneous group B streptococcal infectionStreptococcal intertrigoChronic recurrent erysipelasCorynebacteriumErythrasmaDermatitis gangrenosaErysipeloid of RosenbachMycoplasmaActinomycetotaAquarium granulomaBorderline lepromatous leprosyBorderline leprosyBorderline tuberculoid leprosyBuruli ulcerErythema induratumHistoid leprosyLepromatous leprosyLeprosyLichen scrofulosorumLupus vulgarisMiliary tuberculosisMycobacterium avium–intracellulare complex infectionMycobacterium haemophilum infectionMycobacterium kansasii infectionPapulonecrotic tuberculidPrimary inoculation tuberculosisRapid growing mycobacterium infectionScrofulodermaTuberculosis cutis orificialisTuberculosis verrucosa cutisTuberculous cellulitisTuberculous gummaTuberculoid leprosyCutaneous actinomycosisNocardiosisCutaneous diphtheria infectionArcanobacterium haemolyticum infectionGroup JK corynebacterium sepsisGram -vePseudomonadotaEndemic typhusEpidemic typhusScrub typhusNorth Asian tick typhusQueensland tick typhusFlying squirrel typhusTrench feverBacillary angiomatosisAfrican tick bite feverAmerican tick bite feverRickettsia aeschlimannii infectionRickettsialpoxRocky Mountain spotted feverHuman granulocytotropic anaplasmosisHuman monocytotropic ehrlichiosisFlea-borne spotted feverJapanese spotted feverMediterranean spotted feverFlinders Island spotted feverVerruga peruanaBrill–Zinsser diseaseBrucellosisCat-scratch diseaseOroya feverEhrlichiosis ewingii infectionGonococcemiaGonorrheaPrimary gonococcal dermatitisMelioidosisCutaneous Pasteurella hemolytica infectionMeningococcemiaGlandersChromobacteriosis infectionPasteurellosisTularemiaVibrio vulnificusRhinoscleromaHaemophilus influenzae cellulitisPseudomonal pyodermaPseudomonas hot-foot syndromeHot tub folliculitisEcthyma gangrenosumGreen nail syndromeQ feverSalmonellosisShigellosisPlagueGranuloma inguinaleChancroidAeromonas infectionCampylobacterotaHelicobacter cellulitisSyphilidSyphilisChancreChlamydia infectionLeptospirosisRat-bite feverLyme diseaseLymphogranuloma venereumGram-negative folliculitisGram-negative toe web infectionAbscessPeriapical abscessBoil/furuncleHospital furunculosisCarbuncleParonychiaPyogenic paronychiaPerianal cellulitisAcute lymphadenitisPilonidal cystPyodermaFolliculitisSuperficial pustular folliculitisSycosis vulgarisPimpleEcthymaPitted keratolysisTrichomycosis axillarisGangreneChronic undermining burrowing ulcerFournier gangreneElephantiasis nostrasBlistering distal dactylitisBotryomycosisMalakoplakiaPyomyositisBlastomycosis-like pyodermaBullous impetigoChronic lymphangitisRecurrent toxin-mediated perineal erythemaTick-borne lymphadenopathyTropical ulcer