Pyoderma Gangrenosum (Pathergy Trap): Ngembangna Gancang Maag Karusakan Violaceous sareng Kunaon Debridement Bedah Karusakan Nekrosis¶

Pyoderma gangrenosum (PG) nyaéta dermatosis neutrofilik anu jarang, henteu tepa, autoradang, dimana sinyal imun bawaan anu disregulasi nyababkeun jumlah ageung neutrofil polimorfonuklear anu dewasa sareng steril kana dermis, ngalembereh kolagén sareng jaringan subkutan dina sababaraha jam dugi ka dinten. Sanajan ngaran sajarah nyasabkeun na diciptakeun dina 1930, pyoderma gangrenosum ** lain inféksi baktéri ("pyoderma") atawa gangrene vaskular iskemik leres**. Sabalikna, éta biasana dimimitian salaku papule radang anu lembut, pustule steril, atanapi vesiculopustule hemorrhagic, sering dipicu di tempat anu pasti tina tatu kulit minor, kacamatan serangga, venipuncture, atanapi incision bedah, fenomena ciri anu katelah **pathergy kulit ** (aya dina 30 dugi ka 50 persén pasien). Dina 24 nepi ka 72 jam, pustula steril ngarecah sentral jeung expands centrifugally dina laju pikasieuneun (1 nepi ka 2 séntiméter per poé) kana excruciatingly nyeri, purulent, kawah necrotic ringed ku patognomonik ** boggy, gunmetal-abu nepi ka jero violaceous (wungu-buleud dikurilingan ku wungu, buleud bulao). halo erythematous. Antara 50 jeung 70 pers penderita pyoderma gangrenosum boga kasakisistemik kaayaan, paling ilahar Kasakit radang Bowel (Ulcerative Colitis atawa Panyakit Crn) **, ** Rheumatoid Arthritis atanapi Seronegative Spondyloarthritis **, ** Gammopathy Monoclonal (husus IgA paraproteinemia, Maliproteinemia) . Leukemia atanapi Sindrom Myelodysplastic). Kusabab maag purulen ngembang pesat, dibarengan ku muriang, nyeri parna, sareng jumlah sél getih bodas 20,000 dugi ka 40,000 sél / mcL caket pisan meniru necrotizing fasciitis (inféksi baktéri anu ngadahar daging) atanapi bisul tatu pasca operasi, dokter bedah anu henteu mikawanoh pyoderma gangrenosum bedah pikeun pasien anu sering ka kamar operasi. debridement. Dina pyoderma gangrenosum, **unggal stroke tina scalpel ahli bedah urang memicu badai neutrofil pathergic ngabeledug sapanjang margin kulit anyar neukteukteukna **, ngabalukarkeun maag dua kali atawa rangkep tilu dina ukuran sapeuting, nembongkeun urat jeung tulang, atawa ngarah kana amputasi anggota awak nu teu perlu. Upami pasien ngembangkeun maag anu gancang ngembang sareng wates anu dirusak ungu saatos trauma atanapi operasi minor, nelepon lokal anjeun nomer darurat atawa neangan evaluasi dermatology rumah sakit urgent geuwat. Pariksa ogé pituduh duduluran urang dina kalsifilaksis, plak retiform violaceous, sareng natrium tiosulfat, erysipelas vs necrotizing fasciitis vs stasis dermatitis triage, jeung randa hideung latrodectism vs coklat recluse loxoscelism maag necrotic triage.

Prioritas darurat langsung anjeun nyaéta ** nempatkeun peringatan langsung "JANGAN DIBUBURKAN" dina bagan pasien sareng ganti baju **, ** ngabédakeun pyoderma gangrenosum tina inféksi jaringan lemes anu necrotizing leres ** ngagunakeun pamariksaan klinis bedside, pewarnaan Gram, kultur jaringan, sareng PARACELSUS atanapi Delphi diagnostik kulit anu divalidasi. biopsi tina wates violaceous aktif (ngan lamun diperlukeun pikeun ngaluarkeun inféksi, vasculitis, atawa malignancy, jeung ideally bari ngamimitian imunosupresi sistemik pikeun pathergy biopsy tumpul), jeung mimiti gancang-acting sistemik anti-neutrofil immunosuppression, husus **-dosis tinggi sistemik Kortikosteroid (oral Prednisolone / kg 2 mg IV mednisone IV / Prednisone IV / oral). 500 ka 1,000 mg / dinten salami 3 dinten) **, ** Cyclosporine lisan (4 dugi ka 5 mg / kg / dinten) **, atanapi ** Infliximab intravena (5 mg / kg, standar emas pikeun Crohn / Ulcerative Colitis-associated sareng peristomal PG) **.

Laksanakeun ieu ayeuna¶

1. ** Milarian Evaluasi Darurat sareng Dermatologi Rumah Sakit Urgent upami pustule kulit, incision bedah, atanapi emar minor gancang borok kana kawah anu nyeri pisan sareng wates ungu-biru, boggy, ngagantung.** Puter 911 di Amérika Serikat sareng Kanada, 999 di Inggris Raya, 112 di sakuliah Uni Éropa, atanapi konsultasi diréktur global kami di Australia, 000 di Australia. nomer darurat.
2. STOP Sakur Debridement Bedah Seukeut anu Direncanakeun atanapi Eksisi Lega Langsung (The Pathergy Trap): Upami pasién parantos terang atanapi disangka pisan pyoderma gangrenosum (kalebet Pyoderma Gangrenosum [PPG] Pascaoperasi [PPG] muncul 4 dugi ka 14 dinten saatos réduksi / rekonstruksi payudara, bedah caesarean, atanapi atomaghoracic, bedah caesarean, atanapi atomaghoracic. debridement kalawan scalpel atanapi curette mastikeun contraindicated**. Bedah motong recruits gelombang masif IL-1beta-, IL-8-, sarta TNF-alfa-disetir neutrofil kana dermis karek incised, ngabalukarkeun catastrophic maag centrifugal sakuliah sakabéh dada, beuteung, atawa dahan dina 24 jam.
3. ** Atur Out True Necrotizing Fasciitis, Ecthyma Gangrenosum, sareng Inféksi Jamur Jero Tanpa Micu Eksisi Radikal Teu Dipikabutuh:**
4. Kunaon Ahli Bedah Ditipu: Pyoderma gangrenosum ngabalukarkeun exudate purulent steril konéng-bodas krim (diwangun ku jutaan neutrofil maot), muriang tinggi, sarta leukositosis nepi ka 35.000/mcL.
5. Cara Ngabejaan Éta di Bedside: Teu kawas necrotizing fasciitis (anu sumebar ka jero sapanjang fascia otot subkutan dihareupeun tina karuksakan kulit katempo, ngahasilkeun gas subcutaneous/crepitus, busuk "cai cai" jeung shock septic sistemik kalawan hypotension sarta acidosis laktat), ** pyoderma asortium gangrenosum primér, bodermal bodermal. gunmetal-violaceous undermined overhang **, ** enol gas subcutaneous **, ** enol bau anaérobik busuk **, ** pulsa periferal palpable **, sarta ** noda Gram négatip sarta kultur getih **.
6. Petunjuk PG Pascaoperasi: Inféksi tatu necrotizing baktéri pasca operasi biasana nyerang dina 24 nepi ka 72 jam sanggeus dioperasi (Grup A Streptococcus atawa Clostridium) atawa hadir salaku bisul stitch fluctuant, sedengkeun ** Postoperative Pyoderma Gangrenosum (PPG)** sacara klasik bitu dina sababaraha poé sanggeus stérol leutik ** 4 nepi ka suoptures ** garis nu coalesce na dehisce sakabéh incision bari ** sparing nu areola nippled bulak dina bedah payudara ** sarta gagal pikeun ngaronjatkeun on antibiotik spéktrum lega IV.
7. ** Larapkeun Kerangka Diagnostik anu Divalidasi (Kriteria Konsensus Internasional Delphi sareng Skor PARACELSUS) sareng Kéngingkeun Biopsi Border Sasaran: **
8. Dina 2018 Delphi International Consensus, diagnosis merlukeun 1 Kriteria Utama (biopsi tepi maag nunjukkeun ** padet steril neutrophilic dermal infiltrate **) ditambah ** sahenteuna 4 tina 8 Kriteria Minor ** (ngaluarkeun inféksi dina histology / budaya; pathergy; sajarah IBD / inflammatory 4 days; paating the 4 days of ulceration of ulcerative; ngaruksak wates, sarta tenderness sababaraha kalawan sahanteuna hiji on anterior leg handap; ** cribriform atawa "kertas jaringan ditumbuk" wrinkled tapak tatu ** sarta ngurangan ukuran maag dina 1 bulan dimimitian nginum obat immunosuppressive).
9. Dina Skor PARACELSUS (dimana skor >= 10 poin nunjukeun > 90% probabilitas PG), poin utama dileler pikeun Progressing disease (3 pts), A assessment of diagnoses differential relevan (3 pts), jeung Reddish-violaceous wound border (3 pts), ditambah Acterharactants (2 pts), plus As. bentuk maag aneh (2 pts), ** E ** nyeri ekstrim> 4/10 on VAS (2 pts), sarta ** L ** fenomena pathergy ocalized (2 pts).
10. Mimitian Kortikosteroid Sistemik Dosis Tinggi atanapi Siklosporin Langsung pikeun Ngaeureunkeun Badai Neutrofil:
11. ** Nyalametkeun Sistemik Jalur Kahiji (Bukti Percobaan STOP GAP):** Atur ** Prednisolone / Prednisone Lisan dina 0,75 dugi ka 1,5 mg / kg / dinten (dugi ka 60 dugi ka 100 mg / dinten) **, atanapi pikeun fulminant, ngembangna gancang multilocular atanapi PG pasca operasi, dikaluarkeun Prevenous Meulthyse 0 atanapi postoperative 0,75 mg / kg / dinten. 1,000 mg IV sakali sapoé salila 3 nepi ka 5 poé padeukeut), nu ilaharna arrests ékspansi wates centrifugal sarta ngurangan nyeri agonizing dina ** 48 mun 72 jam **.
12. ** Alternatif Nyalametkeun Jalur Kahiji (Oral Cyclosporine):** The Landmark UK STOP GAP randomized controlled trial ngabuktikeun yén Oral Cyclosporine dina 4 nepi ka 5 mg/kg/day (dibagi dua kali sapoé) boga efficacy penyembuhan maag idéntik jeung speed ka prednisolone lisan, ngajadikeun Cyclosporine mimitina agén stéroid dina penderita diabetes, brittley mimitina pikaresep. psychosis (nyingkahan Cyclosporine dina insufficiency ginjal atanapi hipertensi uncontrolled).
13. ** Initiate Biologic TNF-Alpha Blockade (IV Infliximab 5 mg / kg) pikeun Inflammatory Bowel Disease-Associated, Peristomal, or Stéroid-Refractory Pyoderma Gangrenosum: ** ** Infliximab Intravenous (5 mg / kg dina Minggu 0, 2, sareng 6 minggu) ** ngan ukur dirojong ku terapi biologis unggal 8 minggu. Uji coba pikeun pyoderma gangrenosum, ngahontal réspon klinis gancang dina ** 69 persén pasien dina 2 minggu ** sareng janten pilihan pilihan anu teu dibantah nalika PG aya sareng panyakit Crohn aktip, Ulcerative Colitis, atanapi borok peristomal.
14. ** Praktek Atraumatik, Perawatan Luka Lokal Saimbang Lembap sareng Komprési Lembut: ** Ulah pernah nerapkeun kasa garing anu nempel dina ranjang maag sareng nyéépkeun dermis anu tiasa dicabut (triggering pathergy). Nangtayungan kulit gembleng sabudeureun ku ** séng oksida atawa cyanoacrylate film panghalang **, nerapkeun ** super-potent topikal clobetasol propionate 0,05% salep atawa tacrolimus topical 0,1% salep ** langsung kana inflamed violaceous overhanging wates, pakéan kawah sentral kalawan ** non-adherent hidrogén, atawa silikon dressings non-adherent. ** perban komprési multi-lapisan lembut ** sakali nyeri wates akut dikawasa ku stéroid sistemik.

Tangkal kaputusan: disangka Pyoderma Gangrenosum vs Necrotizing Fasciitis vs Venous/Arterial Ulcer vs Martorell Ulcer¶

flowchart TD
    A["Pasién Ngaronjatkeun Maag Kulit Anu Gancang, Nyeri Nyeri (1 dugi ka 2 cm / dinten) + Dasar Konéng Purulent + Batesan Overhanging Boggy Violaceous/Gunmetal-Gray (Mindeng Saatos Trauma Minor, Venipuncture, atanapi Bedah Anyar)"] --> B{"Lengkah 1: Aturan Langsung tina Inféksi Jaringan Lembut Necrotizing (Necrotizing Fasciitis): Naha Aya Gas Subkutan / Crepitus, Bau Anaérobik Busuk, Nyukcruk Fascial Beyond Margins Kulit, atanapi Septic Shock?"}
    B -->|YES: True Bacterial Necrotizing Fasciitis / Wet Gangrene| C["Ruang Operasi Darurat Éksplorasi Bedah & Debridement + IV Vancomycin + Piperacillin-Tazobactam/Meropenem + Clindamycin"]
    B -->|NO: Primary Dermal Ulceration with Violaceous Undermined Overhang + Negative Gram Stain + Palpable Pulses| D["Lengkah 2: Larapkeun Skor PARACELSUS (> = 10 Poin) & Layar pikeun Asosiasi Sistemik: IBD (Ulcerative Colitis / Crohn), Rheumatoid Arthritis, IgA Gammopathy / AML / MDS, atanapi Levamisole-Adulterated Cocaine Use"]
    D --> E["PESANAN KESELAMATAN WAJIB: Tempatkeun 'PENCEGAHAN PATHERGY KETAT - TANPA DEBRIDEMENT BEDAH SEUNJUT, TANPA KASES KERING KERING' Tanda di Bedside"]
    E --> F{"Lengkah 3: Laksanakeun Biopsi Tepi Sasaran (Kalebet Border Violaceous + Lemak Subkutan) pikeun Histopatologi H&E + Kultur Jaringan Baktéri, Jamur & Mycobacterial"}
    F --> G{"Assess Kasakit severity, Extent & kaayaan komorbiditas sistemik"}
    G -->|Severe, Rapidly Expanding, Multilocular, or Postoperative PG| H["Kahiji-garis Nyalametkeun sistimatis: 1. Prednisone lisan (1 mun 1,5 mg / kg / poé) OR Pulse IV Methylprednisolone (500 mun 1,000 mg / dinten x 3-5 poé); ATAWA 2. Siklosporin Lisan (4 nepi ka 5 mg/kg/hari - STOP GAP Percobaan Sarimbag)"]
    G -->|Coexisting Inflammatory Bowel Disease (Crohn / UC), Peristomal PG, or Steroid-Refractory Disease| I["Nyalametkeun Biologis: Infliximab Intravena (5 mg / kg dina Minggu 0, 2, 6) atanapi Adalimumab + Sasak Kortikosteroid Sistemik"]
    G -->|Underlying Hematologic Malignancy (AML / MDS / IgA Myeloma) or Severe Sepsis Contraindicating Steroids| J["Immunoglobulin Intravena Dosis Tinggi (IVIG 2 g/kg salami 2-5 dinten) atanapi Target IL-1 Antagonis (Anakinra / Canakinumab) + Ngubaran Leukemia / Myeloma Dasar."]
    G -->|Small (< 3 cm), Early, Localized, or Mild Peristomal Ulcer| K["Super-Potent Topical Clobetasol 0,05% Salep atanapi Topical Tacrolimus 0,1% Dilarapkeun ka Border Violaceous + Cautious Intralesional Triamcinolone (40 mg/mL) + Non-Adherent Silicone Dressings"]

Patofisiologi: badai neutrofil steril, pathergy kulit, sareng lima varian klinis Pyoderma Gangrenosum.¶

Pyoderma gangrenosum linggih di tungtung ulcerative parah tina ** spéktrum dermatoses neutrophilic ** (bareng ** Sindrom Manis **, ** dermatosis pustular subcorneal **, ** hidradenitis suppurativa **, sarta ** 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.
=======================================================================

Lima Varian Klinis Béda Pyoderma Gangrenosum¶

1. Pyoderma Gangrenosum Ulcerative Klasik (85% tina Kasus): Paling sering bitu dina suku handap pretibial anterior (70%), batang, atawa beuteung. Dimimitian salaku nodul beureum jero lembut atanapi pustule steril dikurilingan ku halo erythematous anu gancang necroses sentral kana maag jero kalawan **purulent-muncul basa steril ** sarta ** boggy, bluish-ungu (violaceous), ngaruksak wates overhanging . Nalika nyageurkeun dina kaayaan imunosupresi, épitélisasi deui tumbuh tina folikel rambut anu teu aya dina sasak, nyésakeun cribriform patognomonik ("sarupa ayakan" atanapi "kertas rokok/tisu ditumbuk") tapak tatu atrofik.
2. Bullous (Atypical) Pyoderma Gangrenosum (Hématologic Malignancy Beureum Bandéra): Nampilkeun akut, nyeri, deet concentric bullae hemorrhagic (lepuh-eusi getih) kalawan halo radang biru-abu, utamana dina beungeut, leungeun dorsal, jeung extremities luhur tinimbang suku. ** Mutiara Onkologi Kritis:** Langkung ti 70 persén pasien kalayan Bullous Pyoderma Gangrenosum ngagaduhan kaganasan hématologis dasar, khususna Leukemia Myeloid Akut (AML), Sindrom Myelodysplastic (MDS), Neoplasma Myeloproliferative, atanapi IgA Multiple Myelomalylybultologically na sering tumpang tindih sacara klinis, Sindrom amis**.
3. Pustular Pyoderma Gangrenosum (Acute IBD Flare Marker): Presents salaku pepelakan nyeri, diskrit ** 2 nepi ka 5 milimeter pustules steril dikurilingan ku hiji halo erythematous ** dina anggota awak extensor jeung batang luhur nu * teu * sagala kamajuan ka kawah jero; lumangsung ampir sacara éksklusif salila ** akut, flares parna tina Ulcerative Colitis atanapi Crohn Panyakit ** sarta ngabéréskeun nalika flare bowel dirawat kalayan corticosteroids atanapi infliximab.
4. Vegetative (Superficial Granulomatous) Pyoderma Gangrenosum: A laun, kirang nyeri, verrucous (kawas kutil), plak ulcerative deet kalawan tracts sinus nu lacks wates agrésif dirusak violaceous, ilaharna lumangsung dina batang di penderita tanpa kaayaan kasakit sistemik atawa stéroid, ogé siklis.
5. Peristomal Pyoderma Gangrenosum (PPG): Kajadian langsung padeukeut jeung ileostomy abdominal atawa colostomy stoma dina penderita Panyakit Inflammatory Bowel (15% tina sakabeh kasus PG), dipicu ku **pathergy mékanis kronis ti Tight Stoma Appliance Wafers, atawa stripping cerna napel bocor Kusabab maag jero nyeri nyegah wafer kantong ostomy tina sealing ngalawan kulit, stool bocor terus onto kawah atah, nyieun hiji siklus setan nyeri tur gagalna alat.

Sindrom Genetik Autoradang Nampilkeun Pyoderma Gangrenosum (PAPA, PASH, sareng PAPASH)¶

Dina pasien anu langkung ngora kalayan parah, pyoderma gangrenosum kambuh dibarengan ku jerawat anu ngancurkeun atanapi hidradenitis suppurativa, dokter layar pikeun inflammasomopathies autoradang monogenik anu didorong ku mutasi dina PSTPIP1 (Proline-Serine-Threonine Phosphatase Interacting Protein 1N) atanapi Hyperbetatéin 1N*) - Sindrom PAPA: Pyogenic steril rematik + Pyoderma gangrenosum + kista parna Acne. - PASH Syndrome: Pyoderma gangrenosum + Acne + Suppurative Hidradenitis (hidradenitis suppurativa). - Sindrom PAPASH / PASS: Nambahkeun Psoriatic arthritis atawa Ankylosing Spondilitis ka triad. Sindrom ieu ngabales sacara dramatis kana sasaran blokade IL-1 (Anakinra atanapi Canakinumab) atanapi sambetan TNF-alpha (Infliximab / Adalimumab).

Diagnosis diferensial sisi-demi-sisi: Pyoderma Gangrenosum vs Necrotizing Fasciitis vs Martorell Hipertensi maag Iskemik vs Coklat Recluse Spider ngegel vs Levamisole Vasculopathy¶

The PARACELSUS Diagnostic Score and Mandatory Laboratory Workup for Suspected Pyoderma Gangrenosum¶

1. How to Calculate the PARACELSUS Score at the Bedside¶

Published by Jockenhovel and colleagues as a high-sensitivity diagnostic tool to distinguish pyoderma gangrenosum from venous, arterial, and infectious mimics, a total score of 10 points or higher confirms a high probability of Pyoderma Gangrenosum: - Kriteria Utama (Masing-masing 3 Poin): 1. Progressing disease (rapidly expanding ulceration developing in < 6 weeks). 2. Assessment and exclusion of relevant differential diagnoses (venous/arterial insufficiency, infection, vasculitis, calciphylaxis). 3. Reddish-violaceous (purple-blue) wound border. - Minor Criteria (2 Points Each): 4. Amelioration (rapid improvement) by immunosuppressant drugs. 5. Characteristic bizarre, polycyclic, or serpiginous ulcer shape with undermined edges. 6. Extreme pain (> 4 out of 10 on the Visual Analog Scale, often 8 to 10 out of 10). 7. Localized pathergy phenomenon (ulcer triggered at site of trauma, surgery, or biopsy). - Additional Criteria (1 Point Each): 8. Suppurative inflammation on histopathology (dense dermal neutrophilic infiltrate). 9. Undermined wound margins. 10. Systemic disease associated (IBD, rheumatoid arthritis, IgA gammopathy, hematologic malignancy).

2. Workup Sistemik Wajib di Unggal Pasén Anyar didiagnosis kalawan Pyoderma Gangrenosum¶

Kusabab 50 dugi ka 70 persén pasien ngagaduhan panyakit sistemik anu dasar ** (sareng kumargi PG tiasa janten tanda klinis anu munggaran ngeunaan gaib ** Leukemia Myeloid Akut, Sindrom Myelodysplastic, IgA Multiple Myeloma, Panyakit Crohn, atanapi GPA / ANCA Vasculitis ), pesenkeun panel diagnostik lengkep ieu nalika diaku: - Layar Hematologis sareng Paraproteinemia: Hitung Darah Lengkep (CBC) nganggo hapusan darah periferal manual (milari myeloblasts, neutrofil displastik, atanapi batang Auer), Serum Protein Electrophoresis (SPEP) sareng Immunofixation Electrophoresis (IFE), sareng Serum Free Chain Chain gammopathy, paraprotein klasik pakait sareng PG). - ** Layar Panyakit Gastrointestinal / Inflammatory Bowel:* Riwayat diare, hematochezia, leungitna beurat, atanapi aphthae lisan; ** Fecal Calprotectin ** sareng ** Ileo-colonoscopy sareng biopsi mukosa ** upami aya gejala GI atanapi anemia kakurangan beusi anu teu jelas. - Vasculitis, Thrombophilia, and Drug-induced PG Screen: c-ANCA / PR3 and p-ANCA / MPO (pikeun ngaluarkeun Granulomatosis with Polyangiitis [GPA] and Levamisole-adulterated cocaine vasculopathy, nu ngabalukarkeun retiform purpura of ceuli jeung PGO-like borok jeung PGO-positive leukemia. ** Antibodi antifosfolipid ** (antikoagulan lupus, anticardiolipin, beta-2 glikoprotein I), ** Faktor Rheumatoid / Anti CCP **, ** Hépatitis B, Hépatitis C, sareng serologi HIV **, sareng ** Toksikologi Kemih pikeun Kokain / Levamisole . - Protokol Biopsi Kulit Deep Edge (Dua Spésimén): Kéngingkeun biopsi incisional elips sempit atanapi biopsi punch 4-to-6 mm anu ngalangkungan ** wates erythematous-violaceous aktip turun kana lemak subkutan: kirimkeun **Spésimén 1 dina formalin pikeun H&E, PAS, (Grocott methenamine) noda *, sarta ngirim ** Spésimén 2 dina saline steril pikeun aérobik, anaérobik, jamur ( Blastomyces, Cryptococcus, Histoplasma, Sporothrix ), sarta mycobacterial atypical ( M. marinum, M. ulcerans, M. fortuitum *) kultur jaringan **.

Protokol Perawatan Rumah Sakit Lengkah-demi-Lengkah: Imunosupresi Sistemik, Biologis, sareng Perawatan Peristomal¶

1. Imunosupresi Sistemik Jalur Kahiji (Prednisone vs. Cyclosporine)¶

• Systemic Corticosteroids: Start Oral Prednisone or Prednisolone at 1.0 to 1.5 mg/kg/day (60 to 100 mg once daily), or for explosive postoperative or multi-ulcer disease, administer Pulse IV Methylprednisolone (500 to 1,000 mg IV daily for 3 to 5 days). Once border progression stops and the undermined overhang flattens (within 1 to 3 weeks), taper slowly over 3 to 6 months.
• Oral Cyclosporine (Calcineurin Inhibitor): Start Oral Modified Cyclosporine (Neoral) at 4 to 5 mg/kg/day divided twice daily. In the landmark STOP GAP randomized controlled trial, oral cyclosporine (4 mg/kg/day) and oral prednisolone (0.75 mg/kg/day) showed identical healing speed at 6 weeks and identical closure rates at 6 months (47%), with prednisolone carrying more serious infections and cyclosporine causing reversible renal dysfunction and hypertension. Monitor blood pressure, creatinine, potassium, and magnesium every 1 to 2 weeks.

2. Sasaran Terapi Biologis sareng Stéroid-Sparing¶

• TNF-Alpha Inhibitors (Infliximab and Adalimumab): IV Infliximab (5 mg/kg at Weeks 0, 2, and 6, then every 6 to 8 weeks) is the gold-standard biologic agent for PG, especially with Crohn Disease, Ulcerative Colitis, or Peristomal PG (screen for latent TB and Hepatitis B first). Subcutaneous Adalimumab (160 mg Week 0, 80 mg Week 2, then 40 to 80 mg weekly) is an effective subcutaneous option.
• IVIG, Steroid-Sparing Agents, and Cytokine Blockers: Give IVIG (2 g/kg over 3 to 5 days) when active malignancy or sepsis contraindicates steroids. Combine steroids or biologics with Oral Dapsone (50 to 200 mg/day after G6PD screening), Mycophenolate Mofetil, Azathioprine, or Colchicine. For refractory cases or PAPA/PASH syndromes, IL-1 antagonists (Anakinra, Canakinumab), IL-23 inhibitors (Ustekinumab), and JAK inhibitors (Upadacitinib) achieve rapid remission.

3. When Is Surgical Skin Grafting EVER Permitted in Pyoderma Gangrenosum?¶

• During Active Inflammation: NEVER. Any surgical incision, sharp debridement, or skin graft harvest (which triggers a brand-new PG ulcer at the thigh donor site) is strictly forbidden.
• During the Quiescent Healing Phase Under Full Immunosuppression: Once steroids, cyclosporine, or infliximab have completely extinguished the neutrophilic border and pain is gone, gentle slough removal, Negative Pressure Wound Therapy (NPWT), or bioengineered dermal substitutes can accelerate closure.

Regional emergency numbers and agency protocols¶

• United States and Canada: Dial 911 for rapidly expanding necrotic skin ulcers accompanied by high fever, rigors, or intractable pain. Clinicians follow American Academy of Dermatology (AAD) and Delphi International Consensus diagnostic and pathergy-prevention protocols.
• United Kingdom: Dial 999 or proceed to an NHS Emergency Department. Under British Association of Dermatologists (BAD) and UK Dermatology Clinical Trials Network (UK DCTN STOP GAP Trial) guidelines, hospital dermatology teams initiate oral prednisolone (\(0.75\text{ mg/kg/day}\)) or cyclosporine (\(4\text{ mg/kg/day}\)) while enforcing strict surgical debridement bans.
• European Union: Dial 112 across all EU member states. Follow European Academy of Dermatology and Venereology (EADV) and German Dermatologic Society (DDG) PARACELSUS Score guidelines.
• Australia, New Zealand, and Asia-Pacific: Dial 000 in Australia, 111 in New Zealand (Australasian College of Dermatologists [ACD]), 119 in Japan and South Korea (Japanese Dermatological Association [JDA] Pyoderma Gangrenosum Guidelines, where Adalimumab carries formal regulatory approval), 995 in Singapore, or 112 / 108 in India.

Patarosan anu sering ditaroskeun¶

Why does surgical debridement make a Pyoderma Gangrenosum ulcer catastrophically worse?¶

Unlike necrotizing fasciitis (which is caused by flesh-eating bacteria that must be cut away in the operating room), Pyoderma Gangrenosum (PG) is a sterile autoimmune and autoinflammatory condition in which the patient's own white blood cells (neutrophils) mistakenly attack the skin whenever it is injured. This exaggerated reaction to trauma is called cutaneous pathergy. When a surgeon mistakes a purulent PG ulcer for a bacterial infection and cuts away the purple skin border with a scalpel, the damaged skin cells release alarm signals (interleukin-1 beta and TNF-alpha) that summon millions of fresh neutrophils to the newly cut edge. Within 24 to 48 hours, those neutrophils digest the healthy collagen along the surgical margin, causing the ulcer to double or triple in size.

How can doctors tell Postoperative Pyoderma Gangrenosum apart from a bacterial surgical wound infection after breast or abdominal surgery?¶

Opat clues klinis misahkeun Postoperative Pyoderma Gangrenosum (PPG) ti inféksi tatu baktéri: (1) Timing: PPG ampir sok dimimitian 4 nepi ka 14 poé sanggeus dioperasi salaku pustules steril leutik sapanjang garis incision nu dumadakan ngahiji jeung rip tatu kabuka, sedengkeun virulent Grup A Strep necrotizing inféksi necrotizing dina 24 nepi ka 72 jam; (2) Penampilan wates: PPG nyiptakeun boggy, gunmetal-ungu, overhanging ("dirusak") ujung kulit; (3) Nipple sparing dina bedah payudara: dina réduksi payudara atawa rekonstruksi PPG, kulit payudara melts jauh bari kompléks nipple-areolar ieu uniquely luput; jeung (4) Gagalna antibiotik: PPG worsens sanajan spéktrum lega antibiotik intravena jeung debridements bedah, acan eureun ngembangna dina 48 jam dimimitian-dosis tinggi corticosteroids.

Naha Pyoderma Gangrenosum disebut "Pyoderma" upami teu aya inféksi baktéri?¶

Nalika dermatologists Brunsting, Goeckerman, sarta O'Leary mimiti ngaranan kondisi di 1930, aranjeunna salah percaya éta disababkeun ku inféksi streptococcal atawa staphylococcal runaway ("pyoderma" hartina nanah dina kulit) nu ngakibatkeun pati jaringan ("gangrenosum"). Ubar modern engké ngabuktikeun yén nanah konéng kandel nutupan dasar borok PG seger ngandung nol baktéri; Ieu sabenerna sup steril dijieun tina jutaan sél getih bodas hiperaktif (neutrofil) nu geus banjir dermis alatan hiji sistem imun bawaan overactive. Sanaos nami mangrupikeun salah sahiji sajarah, éta tetep aya dina buku ajar médis salami ampir saabad.

Naon kaayaan médis dasar anu paling sering dihubungkeun sareng Pyoderma Gangrenosum?¶

Antara 50 jeung 70 persén pasien didiagnosis kalawan Pyoderma Gangrenosum boga kasakit sistemik kaayaan. Opat asosiasi anu paling umum nyaéta: (1) Kasakit Bowel Inflammatory (Ulcerative Colitis and Crohn Disease, katingal dina 20% ka 30% kasus); (2) Rematik radang (Rheumatoid arthritis jeung ankylosing spondylitis); (3) Kangker hematologic jeung gangguan getih (husus Acute Myeloid Leukemia [AML], Myelodysplastic Syndrome [MDS], sarta IgA Monoclonal Gammopathy, nu utamana numbu ka varian bullous of PG dina leungeun jeung beungeut); jeung (4) sindrom autoinflammatory genetik kawas PAPA jeung sindrom PASH.

Mana anu langkung saé pikeun Pyoderma Gangrenosum: Prednisone atanapi Cyclosporine?¶

Numutkeun kana Landmark UK STOP GAP randomized trialled, oral Prednisolone (0.75 mg / kg / dinten) jeung oral Cyclosporine (4 mg / kg / dinten) anu sarua éféktif: duanana ngeureunkeun progression maag dina speed sarua jeung ngahontal tingkat penyembuhan lengkep ampir identik (ampir 50% healed ku 6 bulan). Dokter milih antara aranjeunna dumasar kana kaayaan kaséhatan pasien anu sanés: Prednisone (atanapi IV Methylprednisolone) langkung dipikaresep pikeun penderita panyakit ginjal atanapi tekanan darah tinggi, sedengkeun Cyclosporine langkung dipikaresep pikeun penderita diabetes, obesitas, osteoporosis, atanapi riwayat efek samping psikiatri anu disababkeun ku stéroid. Nalika PG dihubungkeun sareng panyakit Crohn atanapi Ulcerative Colitis, Infliximab intravena (5 mg / kg) mangrupikeun perlakuan biologis standar emas.

Sumber jeung hidayah resmi¶

• ** JAMA Dermatology Delphi Konsensus Internasional (Maverakis E, Ma C, Shinkai K, et al., 2018): ** * Kriteria diagnostik of Ulcerative Pyoderma Gangrenosum: Konsensus Delphi para Ahli Internasional *.
• ** BMJ (STOP GAP Randomized Controlled Trial, Ormerod AD, Thomas KS, Craig FE, et al., UK Dermatology Clinical Trials Network): ** * Babandingan Dua Pangobatan anu Paling Sering Dipaké pikeun Pyoderma Gangrenosum: Hasil tina STOP GAP Randomized Controlled Trial (Prednisolone vs. Ciclosporin)*.
• ** JAMA Dermatology (Jockenhovel F, et al.): ** * Skor PARACELSUS: Alat Diagnostik Novel pikeun Pyoderma Gangrenosum *.
• British Association of Dermatologists (BAD) jeung American Academy of Dermatology (AAD): Panduan Klinis on Neutrophilic Dermatoses, Postoperative Pyoderma Gangrenosum Recognition, and Pathergy Prevention.
• ** Gut (Brooklyn TN, Dunnill MG, Shetty A, et al.): ** * Infliximab pikeun Perlakuan Pyoderma Gangrenosum: A acak, Double-Buta, Placebo-dikawasa sidang *.

Panungtun patali¶

• Calciphylaxis (calcific uremic arteriolopathy): plak violaceous, eschars hideung, sarta natrium tiosulfat
• Erysipelas vs necrotizing fasciitis vs stasis dermatitis: nyeri kaluar tina proporsi, bullae, sarta triage skor LRINEC
• Hideung randa latrodectism kaku otot vs recluse coklat loxoscelism necrotic maag triage
• Necrotizing fasciitis (inféksi dahar daging) jeung umbul beureum cellulitis
• Nomer darurat dumasar nagara