I-Pyoderma Gangrenosum (I-Pathergy Trap): Inweba Ngokushesha Isilonda Esingaphansi Kwe-Violaceous Futhi Kungani Ukuchithwa Ngokuhlinzwa Kuba Kubi Kakhulu I-Necrosis¶

I-Pyoderma gangrenosum (PG) iyivelakancane, ayitheleleki, i-autoinflammatory neutrophilic dermatosis lapho ukusayinda okungalawuleki kokuzivikela komzimba kushayela izinombolo ezinkulu ze-polymorphonuclear neutrophils ezivuthiwe, eziyinyumba esikhumbeni sesikhumba, ezincibilikisa i-collagen nezicubu ezingaphansi kwesikhumba phakathi namahora kuya ezinsukwini. Naphezu kwegama layo lomlando elidukisayo elaqanjwa ngo-1930, i-pyoderma gangrenosum ** ayiyona ukutheleleka kwebhaktheriya ("pyoderma") noma i-ischemic vascular gangrene** yangempela. Esikhundleni salokho, ngokuvamile iqala njenge-papule evuvukalayo enethenda, i-pustule eyinyumba, noma i-vesiculopustule ene-hemorrhagic, evame ukubangelwa endaweni eqondile yokulimala okuncane kwesikhumba, ukulunywa yizinambuzane, i-venipuncture, noma i-incision yokuhlinzwa, into ephawulekayo eyaziwa ngokuthi i-cutaneous pathergy (ekhona kumaphesenti angu-50 ezigulini ezingu-30). Phakathi namahora angu-24 kuya kwangu-72, i-pustule eyinyumba ibhidlika phakathi futhi inwebe imaphakathi ngesivinini esesabekayo (amasentimitha angu-1 ukuya kwangu-2 ngosuku) ibe i-crater ebuhlungu ngokudlulele, e-purulent, necrotic ekekezwe i-pathognomonic boggy, gunmetal-blue-gray-grey-grey (i-gunmetal-blue) umngcele uzungezwe i-erythematous halo ekhanyayo. Phakathi kwamaphesenti angu-50 no-70 eziguli ezine-pyoderma gangrenosum zinesifo esiyisisekelo, ngokuvamile Isifo Sokuvuvukala Kwamathumbu (I-Ulcerative Colitis noma I-Crohn Disease), I-Rheumatoid Arthritis noma i-Seronegative Spondyloarthritis, I-Monoclonal Gammopathy (speciflinemia i-Hematologic)* I-Hematologic** I-Hematoid (I-Acute Myeloid Leukemia noma i-Myelodysplastic Syndrome)**. Ngenxa yokuthi isilonda esikhula ngokushesha, esinama-purulent esihambisana nomkhuhlane, ubuhlungu obukhulu, kanye nenani lamangqamuzana amhlophe egazi angama-20,000 kuya ku-40,000 amaseli/mcL alingisa eduze necrotizing fasciitis (ukutheleleka kwamagciwane adla inyama) noma ithumba lesilonda langemva kokuhlinzwa, odokotela abahlinzayo abangayiboni i-pyoderma gangrenosum yokuhlinza isiguli njalo. ukuchithwa. Ku-pyoderma gangrenosum, konke ukushaywa kwesikhumba sikadokotela ohlinzayo kubangela isiphepho se-pathergic neutrophil eqhumayo ngasemaphethelweni esikhumba esisanda kusikwa, okubangela isilonda ukuba siphindwe kabili noma kathathu ngobukhulu ngobusuku obubodwa, kuvezwe imisipha nethambo, noma okuholela ekunqanyulweni kwezitho ezingadingekile. Uma isiguli siba nesilonda esikhula ngokushesha esinomngcele onsomi onsomi ngemva kokulimala okuncane noma ukuhlinzwa, shayela indawo yangakini. izinombolo eziphuthumayo noma ufune ukuhlolwa okuphuthumayo kwe-dermatology esibhedlela ngokushesha. Futhi buyekeza imihlahlandlela yethu yezelamani ku I-calciphylaxis, ama-violaceous retiform plaques, ne-sodium thiosulfate, i-erysipelas vs necrotizing fasciitis vs stasis dermatitis triage, futhi black widow latrodectism vs brown recluse loxoscelism necrotic ulcer triage.

Izinto zakho ezibalulekile eziphuthumayo ziwukuba ukubeka isexwayiso esisheshayo sokuthi "UNGACHITHI NGOKUHLINZWA" eshadini lesiguli kanye nokugqoka amanxeba, ukwehlukanisa i-pyoderma gangrenosum ekuthelelekeni kwezicubu ezithambile ze-necrotizing usebenzisa ukuhlolwa komtholampilo oseceleni kombhede, ibala le-Gram, amasiko ezicubu, kanye** ne-Delphius*, i-Delphious*, i-DelphiousI-Crigucteria ye-Delphius* noma i-DelphiusI-Crigucteria ye-Delphious* i-elliptical noma i-punch biopsy yesikhumba somngcele osebenzayo we-violaceous (kuphela uma kudingeka ukuze kukhishwe ukutheleleka, i-vasculitis, noma i-malignancy, futhi ngokufanelekile ngenkathi kuqaliswa i-systemic immunosuppression kuya ku-blunt biopsy pathergy)**, futhi **ukuqala ukusebenza ngokushesha kwe-systemic anti-neutrophil immunosuppression , ikakhulukazi i-Corticodroid1 steroids mg/kg/day or pulse IV Methylprednisolone 500 to 1,000 mg/day for 3 days), oral Cyclosporine (4 to 5 mg/kg/day), or **intravenous Infliximab (5 mg/kg, indinganiso yegolide ye-Crohn/Ulcerative PG/Colperitis)*-

Yenza lokhu manje¶

1. Funa Ukuhlolwa Okuphuthumayo Kwesibhedlela Esiphuthumayo Nesikhumba Uma ipustule esikhumbeni, ukusika, noma inxeba elincane liphuma ngokushesha lingene emgodini obuhlungu kakhulu onomngcele onsomi-oluhlaza okwesibhakabhaka, ogobile, olengayo. Dayela u-911 e-United States naseCanada, 999 e-United Kingdom, 1120 yomhlaba wonke we-European Union, noma thintana ne-European Union 1120 izinombolo eziphuthumayo.
2. MISA Noma Ikuphi Ukucushwa Okubukhali Okuhleliwe Okuhleliwe noma Ukukhishwa Okubanzi Ngokushesha (I-Pathergy Trap): Uma isiguli sazi noma sisola kakhulu i-pyoderma gangrenosum (okuhlanganisa I-Postoperative Pyoderma Gangrenosum [PPG] evela ezinsukwini ezi-4 kuya kweziyi-14 ngemva kokwehliswa kwebele/ukwakhiwa kabusha kwebele, ukuhlinzwa kokuhlinzwa, ukuhlinzwa ukudalwa kwe-stoma), **ukuchithwa okubukhali kokuhlinzwa nge-scalpel noma i-curette kuvinjelwa ngokuqinile **. Ukusika ngokuhlinzwa kubuthela amagagasi amakhulu e-IL-1beta-, IL-8-, kanye nama-neutrophils aqhutshwa yi-TNF-alpha ku-dermis esanda kucutshungulwa, okubangela inhlekelele yezilonda ezimaphakathi esifubeni sonke, isisu, noma isitho phakathi kwamahora angu-24.
3. ** Khipha I-Fasciitis Yeqiniso Ye-Necrotizing, i-Ecthyma Gangrenosum, kanye Nokutheleleka Okujulile Kwesikhunta Ngaphandle Kokucupha Ukukhishwa Okukhulu Okungadingekile: **
4. Okwenza Odokotela Abahlinzayo Bakhohliswe: I-Pyoderma gangrenosum ibangela i-purulent exudate ephuzi emhlophe ephuzi (ehlanganiswe izigidi zama-neutrophils afile), imfiva ephezulu, kanye ne-leukocytosis efika ku-35,000/mcL.
5. Ubahlukanisa Kanjani Eceleni Kombhede: Ngokungafani ne-necrotizing fasciitis (esakazeka ijule eduze kwe-subcutaneous muscle fascia ngaphambi kokuwohloka kwesikhumba okubonakalayo, ikhiqiza igesi engaphansi kwesikhumba/i-crepitus, uketshezi olubi "lwamanzi ezitsheni", kanye nokushaqeka kwe-systemic septic nge-hypotension kanye ne-lactic acidosis), i-pyodermal denoma i-primary ulcer, i-pyodermal denoma i-primary ulcer i-boggy, gunmetal-violaceous undermined overhang, zero gas subcutaneous, zero foul anaerobic smell, palpable peripheral pulses, kanye negative Gram stains and blood cultures.
6. Umkhondo we-PG wangemva kokuhlinzwa: Ukutheleleka kwenxeba elibangelwa amagciwane kwangemva kokuhlinzwa ngokuvamile kugadla kungakapheli amahora angu-24 kuya kwangu-72* okuhlinzwa (Iqembu A Streptococcus noma Clostridium) noma kuvezwe njengethumba elishintshashintshayo lokuthunga, kuyilapho Postoperative Pyoderma Gangrenosums njengezinsuku ezimbalwa eziphuma phambili4 ama-pustules angenalutho emugqeni we-suture ahlanganayo futhi aqede ukusika wonke kuyilapho ivikela i-areola enengono ephaphathekile ekuhlinzweni kwebele futhi ehluleka ukwenza ngcono kumithi elwa namagciwane ene-spectrum IV.
7. Sebenzisa Izinhlaka Zokuxilonga Eziqinisekisiwe (Imibandela Yokunquma I-Delphi International Consensus kanye Nomphumela we-PARACELSUS) futhi Uthole I-Biopsy Yomngcele Oqondisiwe:
8. Ngaphansi kwe 2018 Delphi International Consensus, ukuxilongwa kudinga 1 I-criterion Enkulu (i-biopsy yonqenqema lwesilonda ebonisa **i-dense sterile neutrophilic dermal infiltrate **) kanye **okungenani 4 kwezingu-8 Imibandela Encane ** (ngaphandle kokutheleleka nge-histology/culture; pathergy; ukuvuvuka kwesilonda/isifo samathambo; umlando we-IBD; i-peripheral erythema, ukunciphisa umngcele, kanye nobubele;
9. Ngaphansi kwe- PARACELSUS Score (lapho amaphuzu >= amaphuzu angu-10 ebonisa > amathuba angu-90% e-PG), amaphuzu amakhulu anikezwa Pisifo esigelezayo (3 pts), Aukuhlolwa kokuxilonga okufanelekile okuhlukile (3 amaphoyinti), kanye Reddish-violaceous wound mngcele (3 ptsmeliooooocety) kanye nama-ptsmeli ama-2), Cisimo sezilonda eziyinqaba esihlukumezayo (amaphoyinti angu-2), Eubuhlungu obudlulele > 4/10 ku-VAS (amaphoyinti angu-2), kanye ne-*L**i-ocalized pathergy phenomenon (2 pts).
10. Qala I-Systemic Corticosteroids Enedosi Ephezulu noma i-Cyclosporine Ngokushesha Ukuze Umise Isiphepho Se-Neutrophil:
11. I-First-Line Systemic Rescue (YIMA Ubufakazi Besilingo I-GAP): Lawula I-Oral Prednisolone/Prednisone ku-0.75 kuya ku-1.5 mg/kg/ngosuku (kufika ku-60 kuya ku-100 mg/ngosuku), noma ngokuphela, okwandisa ngokushesha i-multilocular noma i-postoperative Mentradised (500 kuya ku-1,000 mg IV kanye ngosuku nge-3 kuya ku-5 izinsuku ezilandelanayo), okuvamise ukubopha ukunwetshwa komngcele we-centrifugal futhi kunciphise ubuhlungu obubuhlungu phakathi* namahora angu-48 kuya kwangu-72**.
12. Enye I-First-Line Rescue (i-Oral Cyclosporine): Ingqophamlando yase-UK **STOP GAP isilingo esilawulwa ngokungahleliwe ** ifakazele ukuthi i-Oral Cyclosporine ku-4 kuya ku-5 mg/kg/ngosuku (ihlukaniswa kabili nsuku zonke) inamandla afanayo okupholisa isilonda kanye nesivinini kune-oral prednisolosporine-line i-Cyclosporine ekhethiwe kuqala i-Cyclosporine isifo sikashukela, i-osteoporosis enzima, ukukhuluphala, noma i-steroid psychosis (gwema i-Cyclosporine ekungasebenzi kahle kwezinso noma umfutho wegazi ophakeme ongalawuleki).
13. Qalisa i-Biologic TNF-Alpha Blockade (IV Infliximab 5 mg/kg) ye-Inflammatory Bowel Disease-Associated, Peristomal, noma i-Steroid-Refractory Pyoderma Gangrenosum: *Intravenous Infliximab (5 mg/kg emavikini angu-0, 2, kanye namaviki angu-8 kuphela kusekelwa i-biologic) isilingo esilawulwa yi-placebo se-pyoderma gangrenosum, sifinyelela impendulo yomtholampilo ngokushesha ku-69 amaphesenti eziguli phakathi namaviki ama-2 futhi sisebenza njengokwelashwa okukhethwa kukho okungenakuphikiswa lapho i-PG ihlangana nesifo sika-Crohn esisebenzayo, i-Ulcerative Colitis, noma i-peristomal ulceration.
14. Zilolonge Ngokuqinile, Ukunakekelwa Kwezilonda Zasendaweni Okunokulinganisela Nokuswakama kanye Nokucindezelwa Okumnene: Ungalokothi ugcobe i-gauze eyomile enamathela kumbhede wezilonda bese iklebhula i-dermis esebenzayo lapho ikhishwa (okubangela ukuvuvukala). Vikela isikhumba esinempilo esizungezile nge-zinc oxide noma ifilimu ye-cyanoacrylate barrier, sebenzisa i-clobetasol yesihloko esinamandla kakhulu i-clobetasol propionate engu-0.05% yokugcoba noma i-tacrolimus ye-topical 0.1% yokugcoba ngqo emngceleni olenga ngaphezulu we-violaceous ovuthayo, gqokisa i-crater emaphakathi ne-menon-hydrochloride ye-silicone, i-menon-hydrochloride ukugqoka, bese usebenzisa ibhande lokuminyanisa elinezingqimba eziningi uma ubuhlungu obukhulu bomngcele kulawulwa ama-systemic steroid.

Isihlahla sesinqumo: okusolwa iPyoderma Gangrenosum vs Necrotizing Fasciitis vs Venous/Arterial Ulcer vs Martorell Ulcer¶

flowchart TD
    A["Isiguli Sethula Isilonda Esikhula Ngokushesha, Esibuhlungu Kakhulu (1 kuya ku-2 cm/ngosuku) + I-Purulent Yellow Base + Boggy Violaceous/Gunmetal-Grey Undermined Overhanging Border (Imvamisa Ngemva Kokulimala Okuncane, I-Venipuncture, noma Ukuhlinzwa Kwakamuva)"] --> B{"Isinyathelo 1: Ukukhishwa Ngokushesha Kwe-Necrotizing Soft-Tissue Infection (Necrotizing Fasciitis): Ingabe Kukhona I-Subcutaneous Gas/Crepitus, Iphunga Elibi Le-Anaerobic, Ukulandela Nge-Fascial Beyond Skin Margins, noma I-Septic Shock?"}
    B -->|YES: True Bacterial Necrotizing Fasciitis / Wet Gangrene| C["Ukuhlolwa Kwegumbi Lokuhlinza Okuphuthumayo Nokukhishwa Kwezimo Eziphuthumayo + IV Vancomycin + Piperacillin-Tazobactam/Meropenem + Clindamycin"]
    B -->|NO: Primary Dermal Ulceration with Violaceous Undermined Overhang + Negative Gram Stain + Palpable Pulses| D["Isinyathelo sesi-2: Faka isicelo se-PARACELSUS Score (>= 10 Points) & Screen for Systemic Associations: IBD (Ulcerative Colitis / Crohn), Rheumatoid Arthritis, IgA Gammopathy / AML / MDS, noma Ukusetshenziswa kwe-Levamisole-Adulterated Cocaine"]
    D --> E["UMYALELO WOKUPHEPHA OYIMANDELA: Indawo 'IZINDLELA ZOKUQAPHELA OKUQINILE - AKUKHO UKUKHISHWA OKUSHINILE OKUHLINZWA, AKUKHO I-DRY ADHERENT GAUZE' Sign at Bedside"]
    E --> F{"Isinyathelo sesi-3: Yenza i-Targeted Edge Biopsy (Faka i-Violaceous Border + Subcutaneous Fat) ye-H&E Histopathology + Amagciwane, I-Fungal & Mycobacterial Tissue Cultures"}
    F --> G{"Hlola Ukuqina Kwesifo, Ubukhulu kanye Nezimo Eziyisisekelo Zesistimu"}
    G -->|Severe, Rapidly Expanding, Multilocular, or Postoperative PG| H["UKUHLANGANISWA KOHLELO LOKUQALA: 1. I-Oral Prednisone (1 kuya ku-1.5 mg/kg/ngosuku) NOMA I-Pulse IV Methylprednisolone (500 kuya ku-1,000 mg / ngosuku x izinsuku ezingu-3-5); NOMA 2. I-Cyclosporine Yomlomo (4 kuya ku-5 mg/kg/ngosuku - STOP GAP Trial Equivalent)"]
    G -->|Coexisting Inflammatory Bowel Disease (Crohn / UC), Peristomal PG, or Steroid-Refractory Disease| I["I-BIOLOGIC RESCUE: I-Intravenous Infliximab (5 mg/kg Emavikini 0, 2, 6) noma i-Adalimumab + Systemic Corticosteroid Bridge"]
    G -->|Underlying Hematologic Malignancy (AML / MDS / IgA Myeloma) or Severe Sepsis Contraindicating Steroids| J["I-Immunoglobulin Engenayo I-High-Dose (IVIG 2 g/kg ngaphezu kwezinsuku ezi-2-5) noma Umphikisi Ohlosiwe we-IL-1 (Anakinra / Canakinumab) + Yelapha i-Underlying Leukemia/Myeloma"]
    G -->|Small (< 3 cm), Early, Localized, or Mild Peristomal Ulcer| K["I-Clobetasol Yesihloko Esinamandla Kakhulu 0.05% Amafutha noma I-Tacrolimus Yesihloko 0.1% Isetshenziswa Emngceleni We-Violaceous + I-Cautious Intralesional Triamcinolone (40 mg/mL) + Izingubo Ze-Silicone Ezingabambeleli"]

I-Pathophysiology: isiphepho se-neutrophil oyinyumba, i-cutaneous pathergy, kanye nezinhlobo ezinhlanu zomtholampilo ze-Pyoderma Gangrenosum¶

I-Pyoderma gangrenosum ihlezi ekugcineni kwezilonda ezinzima ze-neutrophilic dermatoses spectrum (eceleni I-Sweet syndrome, i-subcorneal pustular dermatosis, i-hidradenitis suppurativa, kanye ne-erythema elevatum diutinum).

HOW MINOR TRAUMA TRIGGERS EXPLOSIVE PATHERGIC ULCERATION IN PG
=======================================================================
[Minor Cutaneous Trauma: Needle Stick, Bug Bite, Scalpel Incision]
                               |
                               v
[Keratinocyte Damage Releases DAMPs (Damage-Associated Molecular
 Patterns: ATP, HMGB1, S100 Proteins, LL-37 Cathelicidin)]
                               |
                               v
[Hyper-Reactive NLRP3 Inflammasome Activation in Dermal Macrophages]
   * Massive local surge of Interleukin-1 beta (IL-1beta), IL-1alpha,
     Tumor Necrosis Factor-alpha (TNF-alpha), IL-8 (CXCL8), IL-17,
     and Granulocyte Colony-Stimulating Factor (G-CSF).
                               |
                               v
[STERILE NEUTROPHIL AVALANCHE INTO THE DERMIS]
   * Millions of mature neutrophils flood the dermis and release
     Matrix Metalloproteinases (MMP-9, MMP-2), Neutrophil Elastase,
     Myeloperoxidase, and Neutrophil Extracellular Traps (NETs).
                               |
                               v
[LIQUEFACTIVE DERMAL COLLAGEN MELTDOWN ("Undermining")]
   * Because neutrophils dissolve the deep reticular dermis faster
     than the overlying epidermis dies, the dermal floor caves in
     beneath the skin edge -> Creates the classic BOGGY, VIOLACEOUS,
     OVERHANGING ("UNDERMINED") BORDER + Cribriform "Tissue Paper" Scar.
=======================================================================

Izinhlobo Ezinhlanu Ezihlukene Zomtholampilo zePyoderma Gangrenosum¶

1. I-Classic Ulcerative Pyoderma Gangrenosum (85% Yezimo): Ivamise ukuqhuma imilenze engaphansi ye-pretibial engaphambili (70%), isiqu, noma isisu. Iqala njenge-nodule ebomvu ejulile ejulile noma i-pustule eyinyumba ezungezwe i-erythematous halo ephuma ngokushesha phakathi nendawo ibe nesilonda esijulile esinesisekelo esiyinyumba esibukeka sengathi si-purulent** kanye **ne- boggy, bluish-purple (violaceous), esibukela phansi umngcele olengayo. Lapho ilulama ngaphansi kokucindezeleka kokuzivikela komzimba, i-re-epithelialization ikhula isuka ezimpandeni zezinwele ezilondoloziwe emabhulohweni, okushiya i-pathognomonic **cribriform ("efana nesisefo" noma "iphepha likagwayi/izicubu ezichotshoziwe").
2. I-Bullous (Atypical) Pyoderma Gangrenosum (I-Hematologic Malignancy Red Flag): Iphrezenta i-acute, ibuhlungu, i-concentric concentric bullae ye-hemorrhagic (amabhamuza agcwele igazi) ene-halo evuvukalayo eluhlaza okwesibhakabhaka nokumpunga, ikakhulukazi ku-ubuso, izandla zomhlane kunemilenze yangaphezulu kunemilenze yangaphandle. Iparele Elibalulekile Le-Oncology: Ngaphezu*** kwamaphesenti angu-70 eziguli ezine-Bullous Pyoderma Gangrenosum zine-hematological malignancy eyisisekelo**, ikakhulukazi I-Acute Myeloid Leukemia (AML), Myelodysplastic Syndrome (MDS), Myeloproliferative Multiple Neoplasms, kanye I-Myeloproliferative Multiple Neoplasms, kanye I-Myeloproliferative Multiples, kanye I-Myeloproliferative Multiples njalo kanye ngokomlando nge-**bulus Sweet syndrome*.
3. I-Pustular Pyoderma Gangrenosum (I-Acute IBD Flare Marker): Yethula njengezitshalo zama-pustules angenalutho abuhlungu, ahlukene amamilimitha angu-2 ukuya kwangu-5 angenalutho azungezwe i-erythematous halo ezithweni ezinwebekayo kanye nesiqu esingaphezulu okungathuthuki konke ukuya kuma-craters ajulile; kwenzeka cishe ngokukhethekile ngesikhathi amaqhubu ashubile, amabi e-Ulcerative Colitis noma i-Crohn Disease futhi ixazulula lapho ukuqubuka kwamathumbu kulashwa nge-corticosteroids noma i-infliximab.
4. I-Vegetative (I-Granulomatous Ephezulu) I-Pyoderma Gangrenosum: I-Pyoderma Gangrenosum ehamba kancane, ebuhlungu kancane, eqinile (efana nensumpa), i-ulcerative plaque enamapheshana e-sinus engenawo umngcele ohlukumezayo onobudlova, ovame ukwenzeka esiqwini ezigulini ngaphandle kokusabela kwe-steroids, isifo se-systemic kanye ne-topical i-minocycline.
5. I-Peristomal Pyoderma Gangrenosum (PPG): Yenzeka ngokushesha eduze kwe-ileostomy yesisu noma i-colostomy stoma ezigulini ezine-Inflammatory Bowel Disease (esibalelwa ku-15% wawo wonke amacala e-PG), okubangelwa **ukugula okungamahlalakhona kwemishini okuvela ku-Tight Stoma, i-Appliance Strip enamathelayo ama-enzyme **. Ngenxa yokuthi isilonda esijulile esibuhlungu sivimbela i-ostomy bag wafer ukuthi ingavali esikhumbeni, indle ivuza ngokuqhubekayo emgodini we-crater eluhlaza, okudala umjikelezo omubi wobuhlungu nokwehluleka komshini.

I-Autoinflammatory Genetic Syndromes ehlanganisa i-Pyoderma Gangrenosum (i-PAPA, i-PASH, ne-PAPASH)¶

Ezigulini ezisencane eziveza i-pyoderma gangrenosum enzima, ephindaphindayo ehambisana nezinduna ezibhubhisayo noma i-hidradenitis suppurativa, odokotela bahlola i-monogenic autoinflammatory inflammasomopathies eqhutshwa izinguquko ku-PSTPIP1 (*Proline-Serine-Threonine Phosphatase I-Protein Interacting Protein) noma i-Hypertein) I-IL-1beta: - I-PAPA Syndrome: Pyogenic sterile Arthritis + Pyoderma gangrenosum + i-cystic eqinile Acne. - I-PASH Syndrome: Pyoderma gangrenosum + Acne + Suppurative Hidradenitis (hidradenitis suppurativa). - I-PAPASH / PASS Syndromes: Ukwengeza Psoriatic arthritis noma Ankylosing Spondylitis ku-triad. Lawa ma-syndromes aphendula ngokuphawulekayo kuvimba kwe-IL-1 okuhlosiwe (Anakinra noma i-Canakinumab) noma i-TNF-alpha inhibitors (Infliximab / Adalimumab).

Ukuxilongwa komehluko ohlangothini ngalunye: I-Pyoderma Gangrenosum vs Necrotizing Fasciitis vs Martorell Hypertensive Ischemic Ulcer vs Brown Recluse Spider Bite vs Levamisole Vasculopathy¶

I-PARACELSUS Diagnostic Score kanye Nokusebenza Kwelabhorethri Okuyisibopho Kwabasolayo be-Pyoderma Gangrenosum¶

1. Ungabala Kanjani Iphuzu le-PARACELSUS Eceleni Kombhede¶

Ishicilelwe nguJockenhovel kanye nozakwabo njengethuluzi lokuxilonga elizwela kakhulu ukuhlukanisa i-pyoderma gangrenosum ku-venous, arterial, kanye nokulingisa okuthelelanayo, a inani lamaphuzu angu-10 noma ngaphezulu liqinisekisa amathuba aphezulu e-Pyoderma Gangrenosum: - Imibandela Ebalulekile (Amaphuzu Ama-3 Lilinye): 1. Pisifo esikhulayo (izilonda ezikhula ngokushesha ezikhulayo emavikini angu-6). 2. **Ukuhlola kanye nokukhishwa kokuxilongwa okuhambisanayo okuhlukile (ukungasebenzi kahle kwe-venous/arterial, ukutheleleka, i-vasculitis, i-calciphylaxis). 3. Reddish-violaceous (purple-blue) umngcele wenxeba. - Imibandela Encane (Amaphuzu angu-2 Lilinye): 4. Ai-melioration (intuthuko esheshayo) ngezidakamizwa ezivimbela ukuzivikela komzimba. 5. Ci-haracteristic bizarre, i-polycyclic, noma i-serpiginous ulcer shape enemiphetho encishisiwe. 6. Eubuhlungu obudlulele (> 4 koku-10 ku-Visual Analog Scale, ngokuvamile 8 kuya ku-10 kokungu-10). 7. Li-ocalized pathergy phenomenon (isilonda esiqalwe endaweni yokuhlukumezeka, ukuhlinzwa, noma i-biopsy). - Imibandela Eyengeziwe (Iphuzu Eli-1 Ngalinye): 8. Sukuvuvukala okwandayo ku-histopathology (i-dense dermal neutrophilic infiltrate). 9. Uimikhawulo yesilonda encishisiwe. 10. Sisifo esihlobene (IBD, rheumatoid arthritis, IgA gammopathy, malignancy hematologic).

2. Ukusebenza Okuhlelekile Okuphoqelekile Kuso Sonke Isiguli Esisanda Kutholwa Esine-Pyoderma Gangrenosum¶

Ngenxa yokuthi amaphesenti angu-50 kuya kwangu-70 eziguli anesifo esiyisisekelo se-systemic (futhi ngenxa yokuthi i-PG ingaba uphawu lokuqala lomtholampilo lwemilingo Acute Myeloid Leukemia, Myelodysplastic Syndrome, IgA Multiple Myeloma, Crohn Disease, noma i-GPA/ANCA Vasculitis), oda leli phaneli lokuxilonga eliphelele lapho ungeniswa: - Isikrini se-Hematologic and Paraproteinemia: Complete Blood Count (CBC) ne-manuwali ye-peripheral blood smear (ibheka ama-myeloblasts, i-dysplastic neutrophils, noma i-Auer rods), I-Serum Protein Electrophoresis (SPEP) ene-Immunofixation Electrophoresis (IFE), kanye I-Ignes ebheka mahhala, kanye I-Igrumu ebheka i-ChacifG mahhala i-monoclonal gammopathy, i-paraprotein yakudala ehlotshaniswa ne-PG). - Isikrini Sezifo Zamathumbu Amathumbu/Amathumbu: Umlando onemininingwane wohudo, i-hematochezia, ukuncipha kwesisindo, noma i-aphthae yomlomo; I-Fecal Calprotectin kanye ne-Ileo-colonoscopy ene-mucosal biopsies uma kukhona izimpawu ze-GI noma i-anemia yokuntuleka kwensimbi engachazwanga. - I-Vasculitis, I-Thrombophilia, kanye Nesikrini Se-PG Esenziwe Ngezidakamizwa: c-ANCA / PR3 kanye ne-p-ANCA / MPO (ukuze kukhishwe I-Granulomatosis ene-Polyangiitis [GPA] kanye Ne-Levamisole-addulterated cocaine vasculopathy, ebangela i-retiform purpura ye-earlobe-NEH yendlebe ANCA), Amasosha omzimba e-Antiphospholipid (lupus anticoagulant, anticardiolipin, beta-2 glycoprotein I), Rheumatoid Factor / Anti-CCP, Hepatitis B, Hepatitis C, ne-HIV serologies, kanye Ne-Urine Toxicology yeCocaine/Levamisole. - I-Deep Edge Skin Biopsy Protocol (Izifanekiso Ezimbili): Thola i-elliptical incisional biopsy encane noma i-4-to-6 mm punch biopsy ehlanganisa umngcele osebenzayo we-erythematous-violaceous wehlele emafutheni angaphansi kwesikhumba: thumela I-Specimen 1 in formalin ye-H&E, PAS, i-Grocotte-Grocotte-Grocotte-Grocotte, i-Grocotte-Silver amabala, futhi uthumele I-Specimen 2 ku-saline oyinyumba ye-aerobic, anaerobic, fungal (Blastomyces, Cryptococcus, Histoplasma, Sporothrix), kanye ne-atypical mycobacterial (M. marinum, M. ulcerans, M. fortuitum) amasiko ezicubu.

Isinyathelo ngesinyathelo Iphrothokholi Yokwelashwa Kwesibhedlela: I-Systemic Immunosuppression, Biologics, kanye nokunakekelwa kwePeristom¶

1. Umugqa Wokuqala We-Systemic Immunosuppression (Prednisone vs. Cyclosporine)¶

• I-Systemic Corticosteroids: Qala I-Oral Prednisone noma i-Prednisolone ku-1.0 kuya ku-1.5 mg/kg/ngosuku (60 kuya ku-100 mg kanye ngosuku), noma ngesifo esiqhumayo sangemva kokuhlinzwa noma sezilonda eziningi, sebenzisa *I-Pulse IV Methylprednisolone (500 mg kuya ku-3 mg nsuku zonke IV izinsuku ezingu-1,00) Uma ukuqhubekela phambili komngcele kuma futhi i-overhang encishisiwe iphansi (phakathi kweviki elingu-1 kuya kwangu-3), thinta kancane kancane ezinyangeni ezi-3 kuya kwezi-6.
• I-Cyclosporine Yomlomo (i-Calcineurin Inhibitor): Qala I-Cyclosporine Eguquliwe Yomlomo (Neoral) ku-4 kuya ku-5 mg/kg/ngosuku ihlukaniswa kabili ngosuku. Kumlando othi **STOP GAP isilingo esilawulwa ngokungahleliwe **, i-cyclosporine yomlomo (4 mg/kg/ngosuku) kanye ne-prednisolone yomlomo (0.75 mg/kg/ngosuku) ibonise isivinini sokuphulukisa esifanayo emavikini angu-6 kanye namazinga okuvala afanayo ezinyangeni ezingu-6 (47%), ne-prednisolone ephethe izifo ezimbi kakhulu kanye ne-cyclibleosporinetension ebangela i-dysversction reypersioner. Gada umfutho wegazi, i-creatinine, i-potassium, ne-magnesium njalo emavikini angu-1 kuya kwangu-2.

2. Ukwelashwa Okuhlosiwe Kwe-Biologic kanye Ne-Steroid-Sparing¶

• I-TNF-Alpha Inhibitors (I-Infliximab ne-Adalimumab): IV Infliximab (5 mg/kg Kumaviki angu-0, 2, no-6, bese kuba njalo emavikini angu-6 kuye kwayi-8) i-ejenti ye-biologic esezingeni legolide ye-PG, ikakhulukazi nge-Crohn Disease, Ulcerative Colitis ye-Hepatitis ne-Peristomal yokuqala (i-Peristomal TB) noma i-Peristomal TB I-Subcutaneous Adalimumab (160 mg Iviki 0, 80 mg Isonto lesi-2, bese kuba ngu-40 kuya ku-80 mg masonto onke) inketho esebenzayo ye-subcutaneous.
• IVIG, Steroid-Sparing Agents, and Cytokine Blockers: Nikeza IVIG (2 g/kg ngaphezu kwezinsuku ezi-3 kuya kwezingu-5) uma ubulwelwe obusebenzayo noma i-sepsis iphikisana nama-steroid. Hlanganisa ama-steroid noma i-biologics ne-Oral Dapsone (50 kuya ku-200 mg/ngosuku ngemva kokuhlolwa kwe-G6PD), Mycophenolate Mofetil, Azathioprine, noma Colchicine. Ezimweni eziphikisayo noma ama-PAPA/PASH syndromes, IL-1 antagonists (Anakinra, Canakinumab), IL-23 inhibitors (Ustekinumab), kanye ne-JAK inhibitors (Upadacitinib) azuza ukukhululwa okusheshayo.

3. Kuvunyelwa Nini Ukuxhunyelelwa Kwesikhumba Esihlinziwe e-Pyoderma Gangrenosum?¶

• Ngesikhathi Sokuvuvukala Okusebenzayo: KE. Noma ikuphi ukusika ngokuhlinzwa, ukuchithwa okubukhali, noma ukuhlunyeleliswa kwesikhumba (okuvusa isilonda esisha se-PG ethangeni isizinda somnikeli) kwenqatshelwe ngokuphelele.
• Ngesikhathi Sesigaba Sokuphulukisa Esipholile Ngaphansi Kokucindezela Okugcwele Kokuzivikela Komzimba: Uma ama-steroid, i-cyclosporine, noma i-infliximab isiwucime ngokuphelele umngcele we-neutrophilic futhi ubuhlungu sebungasekho, *ukususwa kweslough okuthambile, Ukwelashwa Okubi Ngengcindezi Yenxeba (NPWT), noma ama-bioengineered dermal substitutes

Izinombolo zezimo eziphuthumayo zesifunda kanye nezinqubomgomo ze-ejensi¶

• I-United States ne-Canada: Dayela u-911* ukuze uthole izilonda zesikhumba ezikhula ngokushesha ezihambisana nokushisa okukhulu, ukuqina, noma ubuhlungu obungalawuleki. Odokotela balandela i-American Academy of Dermatology (AAD) kanye ne-Delphi International Consensus izinqubo zokuxilonga nezokuvimbela ukugula.
• E-United Kingdom: Dayela 999 noma uqhubekele eMnyangweni Wezimo Eziphuthumayo we-NHS. Ngaphansi kwe- British Association of Dermatologists (BAD) kanye ne-UK Dermatology Clinical Trials Network (UK DCTN STOP GAP Trial), amathimba esibhedlela sesikhumba aqala i-oral prednisolone (\(0.75\text{ mg/kg/day}\)) noma i-cyclosporine (\(4\text{mg/kg/day debricing\))
• I-European Union: Shayela u-112* kuwo wonke amazwe angamalungu e-EU. Landela i-European Academy of Dermatology and Venereology (EADV) kanye ne-German Dermatologic Society (DDG) imihlahlandlela ye-PARACELSUS Score.
• Australia, New Zealand, and Asia-Pacific: Dayela 000 e-Australia, 111 e-New Zealand (Australasian College of Dermatologists [ACD]), 119 e-Japan and South Korea (**Japanese Dermatological Association [JDA] Pyoderma Gangrenosum Guidelines in 111 in New Zealand (Australasian College of Dermatologists [ACD]), 119 e-Japan and South Korea (Janese Dermatological Association [JDA] Pyoderma Gangrenosum Guidelines in *11***9), lapho isicelo se-damal9 se-Adamal*9, isiceo se-Adamal Singapor noma 112 / 108 e-India.

Imibuzo evame ukubuzwa¶

Kungani ukuchithwa kokuhlinzwa kwenza isilonda se-Pyoderma Gangrenosum sibe sibi kakhulu?¶

Ngokungafani ne-necrotizing fasciitis (ebangelwa amagciwane adla inyama okufanele asikwe egunjini lokuhlinza), i-Pyoderma Gangrenosum (PG) iyisimo esibulalayo sokuzivikela komzimba kanye ne-autoinflammatory lapho amangqamuzana egazi amhlophe esiguli (ama-neutrophils) ehlasela isikhumba ngephutha noma nini lapho silimala. Lokhu kusabela okuyihaba ekuhlukumezekeni kubizwa nge-cutaneous pathergy. Lapho udokotela ohlinzayo enza iphutha le-purulent PG ulcer yokutheleleka kwebhaktheriya futhi esika umngcele wesikhumba onsomi nge-scalpel, amangqamuzana esikhumba awonakele akhulula amasignali e-alamu (interleukin-1 beta kanye ne-TNF-alpha) ebizela izigidi zama-neutrophils amasha onqenqemeni olusanda kusikwa. Phakathi namahora angu-24 kuya kwangu-48, lawo ma-neutrophil agaya i-collagen enempilo eceleni komkhawulo wokuhlinzwa, okubangela isilonda ukuba siphindwe kabili noma kathathu ngobukhulu.

Odokotela bangayihlukanisa kanjani i-Postoperative Pyoderma Gangrenosum ekuthelelekeni kwenxeba lokuhlinzwa elibangelwa amagciwane ngemva kokuhlinzwa kwebele noma kwesisu?¶

Izinkomba ezine zomtholampilo zihlukanisa i-Postoperative Pyoderma Gangrenosum (PPG) ekuthelelekeni kwesilonda sebhaktheriya: (1) Isikhathi: I-PPG cishe njalo iqala ezinsukwini ezi-4 kuye kweziyi-14 ngemva kokuhlinzwa njengama-pustules amancane angenalutho emgqeni wokusika avele ahlangane futhi adabule inxeba, kuyilapho izifo ezibulala i-Group A Strep zigadla kungakapheli amahora angu-24; (2) Ukubukeka komngcele: I-PPG idala unqenqema lwesikhumba esigoqiwe, isibhamu-nsomi, esilenga ngokweqile ("esibukele phansi"); (3) Ukonga ingono ekuhlinzeni ibele: ekwehliseni ibele noma ekwakhiweni kabusha kwe-PPG, isikhumba sebele siyancibilika kuyilapho inkaba yengono ye-areolar igcinwa ngendlela ehlukile; kanye (4) Nokwehluleka kwemithi elwa namagciwane: I-PPG iba yimbi naphezu kwemithi elwa namagciwane efakwa emthanjeni obanzi nobubanzi bokuhlinzwa, nokho iyeka ukwanda phakathi namahora angu-48 okuqala umthamo omkhulu we-corticosteroids.

Kungani i-Pyoderma Gangrenosum ibizwa ngokuthi "i-Pyoderma" uma kungekho ukutheleleka kwebhaktheriya?¶

Lapho odokotela besikhumba uBrunsting, Goeckerman, kanye no-O'Leary beqamba lesi simo okokuqala ngo-1930, bakholelwa ngephutha ukuthi sibangelwa ukutheleleka kwe-streptococcal noma i-staphylococcal ("pyoderma" kusho ubomvu esikhumbeni) okwaholela ekufeni kwezicubu ("gangrenosum"). Imithi yesimanje kamuva yafakazela ukuthi ubomvu obujiyile obuphuzi obumboze isisekelo sesilonda se-PG esisha buqukethe amagciwane ayiziro; empeleni iyisobho eliyinyumba elenziwe ngezigidi zamangqamuzana amhlophe egazi (ama-neutrophils) agcwele i-dermis ngenxa yesimiso somzimba sokuzivikela ezifweni esisebenza ngokweqile. Nakuba leli gama liyigama eliyiphutha elingokomlando, liye lahlala ezincwadini zezokwelapha cishe iminyaka eyikhulu.

Yiziphi izimo zezokwelapha eziyisisekelo ezivame ukuxhunyaniswa nePyoderma Gangrenosum?¶

Phakathi kwamaphesenti angama-50 no-70 eziguli ezitholwe zine-Pyoderma Gangrenosum zinesifo esiyisisekelo se-systemic. Izinhlangano ezine ezivame kakhulu yilezi: (1) I-Inflammatory Bowel Disease (I-Ulcerative Colitis ne-Crohn Disease, ebonakala ku-20% kuya ku-30% yamacala); (2) I-Arthritis Evuthayo (i-Rheumatoid Arthritis kanye ne-ankylosing spondylitis); (3) Umdlavuza we-Hematologic kanye nokuphazamiseka kwegazi (ikakhulukazi i-Acute Myeloid Leukemia [AML], i-Myelodysplastic Syndrome [MDS], ne-IgA Monoclonal Gammopathy, exhunyaniswe ikakhulukazi nokuhluka kwe-PG ezandleni nasebusweni); kanye (4) ne-Genetic autoinflammatory syndromes njenge-PAPA ne-PASH syndrome.

Yikuphi okusebenza kangcono ku-Pyoderma Gangrenosum: i-Prednisone noma i-Cyclosporine?¶

Ngokocwaningo oluyingqopha-mlando lwe-UK STOP GAP olulawulwa ngokungahleliwe, i-Prednisolone yomlomo (0.75 mg/kg/ngosuku) kanye ne-Cyclosporine yomlomo (4 mg/kg/ngosuku) zisebenza ngokulinganayo: zombili misa ukuqhubeka kwezilonda ngesivinini esifanayo futhi zithole amazinga afanayo okuphola acishe abe phelele (cishe ama-50% alapheka ngezinyanga eziyisi-6). Odokotela bakhetha phakathi kwabo ngokusekelwe kwezinye izimo zezempilo zesiguli: I-Prednisone (noma i-IV Methylprednisolone) ithandwa ezigulini ezinesifo sezinso noma umfutho wegazi ophakeme, kuyilapho i-Cyclosporine ithandwa ezigulini ezinesifo sikashukela, ukukhuluphala ngokweqile, i-osteoporosis, noma umlando we-steroid-induced psychiatric side effects. Uma i-PG ixhunywe nesifo sika-Crohn noma i-Ulcerative Colitis, i-Infliximab emithanjeni (5 mg/kg) iwukwelashwa kwe-biologic okusagolide.

Imithombo nesiqondiso esisemthethweni¶

• I-JAMA Dermatology Delphi International Consensus (Maverakis E, Ma C, Shinkai K, et al., 2018): Imibandela Yokuxilongwa Kwe-Ulcerative Pyoderma Gangrenosum: I-Delphi Consensus Yochwepheshe Bamazwe Ngamazwe.
• BMJ (STOP GAP Randomized Controlled Trial, Ormerod AD, Thomas KS, Craig FE, et al., UK Dermatology Clinical Trials Network): *Ukuqhathaniswa Kokwelashwa Okubili Okuvame Ukusetshenzwa Kwe-Pyoderma Gangrenosum: Imiphumela Yesivivinyo Esilawulwa Ngokungahleliwe se-STOP GAP vs.Predniposolone (Predniposolone)
• I-JAMA Dermatology (Jockenhovel F, et al.): Isikolo se-PARACELSUS: Ithuluzi Elinoveli Lokuxilonga le-Pyoderma Gangrenosum.
• I-British Association of Dermatologists (BAD) kanye ne-American Academy of Dermatology (AAD): Imihlahlandlela Yemitholampilo Kuma-Neutrophilic Dermatoses, I-Postoperative Pyoderma Gangrenosum Recognition, and Pathergy Prevention.
• I-Gut (Brooklyn TN, Dunnill MG, Shetty A, et al.): I-Infliximab Yokwelapha I-Pyoderma Gangrenosum: Isivivinyo Esilawulwa Ngokungahleliwe, Esingaboni Kabili, Esilawulwa Indawo.

Iziqondiso ezihlobene¶

• I-Calciphylaxis (i-calcific uremic arteriolopathy): ama-violaceous plaque, ama-black eschars, ne-sodium thiosulfate
• I-Erysipelas vs necrotizing fasciitis vs stasis dermatitis: ubuhlungu ngaphandle kwesilinganiso, i-bullae, kanye ne-LRINEC score triage
• Umfelokazi omnyama latrodectism muscle rigidity vs brown recluse loxoscelism necrotic ulcer triage
• I-Necrotizing fasciitis (ukutheleleka okudla inyama) kanye namafulegi abomvu we-cellulitis
• Izinombolo zesimo esiphuthumayo ngezwe