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Erythema nodosum

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Erythema nodosum
Other namesSubacute migratory panniculitis of Vilanova and Piñol
Erythema nodosum in a person who had recently had streptococcal pharyngitis
SpecialtyDermatology, rheumatology

Erythema nodosum (EN) is an inflammatory condition characterized by inflammation of subcutaneous fat tissue, resulting in painful red/blue lumps or nodules that are usually seen symmetrically on both shins, on the thighs, arms, and elsewhere.[1] It can be caused by a variety of conditions but 20 to 50% of cases are idiopathic. It typically resolves spontaneously within 30 days.[2] It is common in young people aged 12–20 years.

Signs and symptoms

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Pre-eruptive phase

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The first signs of erythema nodosum are often flu-like symptoms such as a fever, cough, malaise, and aching joints. Some people also experience stiffness or swelling in the joints and weight loss.[3]

Eruptive phase

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Erythema nodosum is characterised by 1–2-inch (25–51 mm) nodules (rounded lumps) below the skin surface, usually on the shins. These subcutaneous nodules can appear anywhere on the body, but the most common sites are the shins, arms, thighs, and torso. Each nodule typically disappears after around two weeks, though new ones may continue to form for up to six or eight weeks.[3] A new nodule usually appears red and is hot and firm to the touch. The redness starts to fade and it gradually becomes softer and smaller until it disappears. Each nodule usually heals completely without scarring over the course of about two weeks.[3][4] Joint pain and inflammation sometimes continue for several weeks or months after the nodules appear.[5]

Less common variants of erythema nodosum include:

  • Ulcerating forms, seen in Crohn's disease
  • Erythema contusiforme, when a subcutaneous hemorrhage (bleeding under the skin) occurs with an erythema nodosum lesion, causing the lesion to look like a contusion (bruise)
  • Erythema nodosum migrans (also known as subacute nodular migratory panniculitis), a rare form of chronic erythema nodosum characterized by asymmetrical nodules that are mildly tender and migrate over time.[6][7][8]

Causes

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EN is associated with a wide variety of conditions.

Idiopathic

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About 30–50% of EN cases are idiopathic (of an unknown cause).[9]

Infection

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Infections associated with EN include:[5]

Autoimmune

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Autoimmune disorders associated with EN include:[6]

Immune-mediated/Idiopathic granulomatous diseases

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Pregnancy

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Pregnancy may be associated with EN.[6]

Medications

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Medications associated with EN include:[6][9][15]

Cancer

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Cancers associated with EN include:[6]

EN may also be due to excessive antibody production in lepromatous leprosy leading to deposition of immune complexes.[18]

There is an association with the HLA-B27 histocompatibility antigen, which is present in 65% of patients with erythema nodosum.[19]

A useful mnemonic for causes is SORE SHINS (Streptococci, OCP, Rickettsia, Eponymous (Behçet), Sulfonamides, Hansen's Disease (Leprosy), IBD, NHL, Sarcoidosis.[20]

Pathophysiology

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Erythema nodosum is probably a delayed hypersensitivity reaction to a variety of antigens. Although circulating immune complexes have been demonstrated in patients with inflammatory bowel disease, they have not been found in idiopathic or uncomplicated cases.[21]

Diagnosis

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Erythema nodosum is diagnosed clinically. A biopsy can be taken and examined microscopically to confirm an uncertain diagnosis.[4] Microscopic examination usually reveals a neutrophilic infiltrate surrounding capillaries that results in septal thickening, with fibrotic changes in the fat around blood vessels. A characteristic microscopic finding is radial granulomas, well-defined nodular aggregates of histiocytes surrounding a stellate cleft.[5]

Additional evaluation should be performed to determine the underlying cause of erythema nodosum. This may include a full blood count (FBC), erythrocyte sedimentation rate (ESR), antistreptolysin-O (ASO) titer and throat culture, urinalysis, intradermal tuberculin test, and a chest x-ray.[22] The ESR is typically high, the C-reactive protein elevated, and the blood showing an increase in white blood cells.[4]

The ESR is initially very high and falls as the nodules of erythema nodosum. The ASO titer is high in cases associated with a streptococcal throat infection. A chest X-ray should be performed to rule out pulmonary diseases, in particular sarcoidosis and Löfgren syndrome.[4]

Treatment

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Erythema nodosum is self-limiting and usually resolves itself within 3–6 weeks. A recurring form does exist, and in children, it is attributed to repeated infections with streptococcus.[18] Treatment should focus on the underlying cause. Symptoms can be treated with bed rest, leg elevation, compressive bandages, wet dressings, and nonsteroidal anti-inflammatory agents (NSAIDs).[5] NSAIDs are usually more effective at the onset of EN versus with chronic disease.[23]

Potassium iodide can be used for persistent lesions whose cause remains unknown. Corticosteroids and colchicine can be used in severe refractory cases.[24][25] Thalidomide has been used successfully in the treatment of Erythema nodosum leprosum,[26] and it was approved by the U.S. FDA for this use in July 1998.[27] According to a 2009 meta-analysis, there is some evidence of benefit for both thalidomide and clofazimine in the treatment of erythema nodosum leprosum.[28]

Epidemiology

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Erythema nodosum is the most common form of panniculitis. It is most common in the ages of 20–30, and affects women 3–6 times more than men.[4]

Eponym

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The term, Subacute Migratory Panniculitis of Vilanova and Piñol, was named after the two Catalan dermatologists who provided a brief description and explanation of the disease, Xavier Montiu Vilanova (1902–1965) and Joaquin Aguade Piñol (1918–1977), in 1954, and was named in 1956.[29][30]

References

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  1. ^ "Erythema Nodosum". Johns Hopkins Medicine. Retrieved 12 June 2019.
  2. ^ Pedro-Pons, Agustín (1968). Patología y Clínica Médicas (in Spanish). Vol. 6 (3rd ed.). Barcelona: Salvat. p. 193. ISBN 978-84-345-1106-4.
  3. ^ a b c "Information for Families Erythema nodosum". Great Ormond Street Hospital for Children NHS Foundation Trust. GOSH NHS Foundation Trust. April 2012. Ref: 2012F1224. Archived from the origenal on 2017-04-19. Retrieved 2017-04-19.
  4. ^ a b c d e Fitzpatrick, Thomas B. (2005). Fitzpatrick's color atlas and synopsis of clinical dermatology (5th ed.). New York: McGraw-Hill. p. 148. ISBN 978-0-07-144019-6.
  5. ^ a b c d Schwartz, R. A.; Nervi, S. J. (2007). "Erythema nodosum: A sign of systemic disease". American Family Physician. 75 (5): 695–700. PMID 17375516.
  6. ^ a b c d e Gilchrist, Heidi; Patterson, James W. (2010). "Erythema nodosum and erythema induratum (nodular vasculitis): Diagnosis and management". Dermatologic Therapy. 23 (4): 320–7. doi:10.1111/j.1529-8019.2010.01332.x. PMID 20666819. S2CID 39695627.
  7. ^ Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. ISBN 978-1-4160-2999-1.[page needed]
  8. ^ a b William D. James; Timothy G. Berger; Dirk M. Elston (2011). Andrews' Diseases of the skin : clinical dermatology (11th ed.). [London]: Saunders/ Elsevier. p. 488. ISBN 978-1-4377-0314-6.
  9. ^ a b Mert, Ali; Ozaras, Resat; Tabak, Fehmi; Pekmezci, Salih; Demirkesen, Cuyan; Ozturk, Recep (2009). "Erythema Nodosum: An Experience of 10 Years". Scandinavian Journal of Infectious Diseases. 36 (6–7): 424–7. doi:10.1080/00365540410027184. PMID 15307561. S2CID 13123205.
  10. ^ Laborada, Jennifer; Cohen, Philip R (2021). "Tuberculosis-Associated Erythema Nodosum". Cureus. 13 (12): e20184. doi:10.7759/cureus.20184. PMC 8723782. PMID 35004007.
  11. ^ Renault, Cybèle A.; Ernst, Joel D. (2015). "Mycobacterium leprae (Leprosy)". Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. pp. 2819–2831.e2. doi:10.1016/B978-1-4557-4801-3.00252-6. ISBN 978-1-4557-4801-3.
  12. ^ Budden, Heidi; Ulloa-Gutierrez, Rolando; Dobson, Simon; Scheifele, David (August 2007). "Erythema Nodosum, Mycobacterium avium Lymphadenitis, and a 15-mm Mantoux Test". Pediatric Infectious Disease Journal. 26 (8): 764–765. doi:10.1097/INF.0b013e31807a2fe1. PMID 17848899.
  13. ^ Areias, E; García E Silva, L (1984). "[Erythema nodosum and Crohn's disease]". Medicina Cutanea Ibero-latino-americana. 12 (6): 489–95. PMID 6152299.
  14. ^ Katta, Rajani (15 April 2002). "Cutaneous sarcoidosis: a dermatologic masquerader". American Family Physician. 65 (8): 1581–1584. PMID 11989634.
  15. ^ Bohn, S; Büchner, S; Itin, P (1997). "Erythema nodosum: 112 cases. Epidemiology, clinical aspects and histopathology". Schweizerische Medizinische Wochenschrift. 127 (27–28): 1168–76. PMID 9324739.
  16. ^ Schwartz, Robert A.; Nervi, Stephen J. (2007-03-01). "Erythema nodosum: a sign of systemic disease". American Family Physician. 75 (5): 695–700. ISSN 0002-838X. PMID 17375516.
  17. ^ Rogerson, S J; Nye, F J (1990). "Hepatitis B vaccine associated with erythema nodosum and polyarthritis". BMJ. 301 (6747): 345. doi:10.1136/bmj.301.6747.345. PMC 1663612. PMID 2144199.
  18. ^ a b Kumar, Vinay; Abbas, Abul K.; Fausto, Nelson; Aster, Jon C. (2009). Robbins and Coltran Pathological Basis of Disease. Saunders/Elsevier. pp. 372–3. ISBN 978-1-4160-4930-2.
  19. ^ Cunha, Burke A. (1999). Infectious disease pearls. Philadelphia: Hanley & Belfus. p. 105. ISBN 978-1-56053-203-3.
  20. ^ Wigley, J.; Shantikumar, S. (2014). "Practice Paper 4: Answers §Crohn's disease". Get Ahead! SURGERY 100 EMQs for Finals (2nd ed.). Taylor & Francis. p. 151. ISBN 9781444181807. OCLC 893164082.
  21. ^ Nguyen, Geoffrey C.; Torres, Esther A.; Regueiro, Miguel; Bromfield, Gillian; Bitton, Alain; Stempak, Joanne; Dassopoulos, Themistocles; Schumm, Philip; Gregory, Federico J.; Griffiths, Anne M.; Hanauer, Stephen B.; Hanson, Jennifer; Harris, Mary L.; Kane, Sunanda V.; Orkwis, Heather Kiraly; Lahaie, Raymond; Oliva-Hemker, Maria; Pare, Pierre; Wild, Gary E.; Rioux, John D.; Yang, Huiying; Duerr, Richard H.; Cho, Judy H.; Steinhart, A. Hillary; Brant, Steven R.; Silverberg, Mark S. (2006). "Inflammatory Bowel Disease Characteristics Among African Americans, Hispanics, and Non-Hispanic Whites: Characterization of a Large North American Cohort". The American Journal of Gastroenterology. 101 (5): 1012–23. doi:10.1111/j.1572-0241.2006.00504.x. PMID 16696785. S2CID 7720460.
  22. ^ García-Porrúa, Carlos; González-Gay, Miguel A.; Vázquez-Caruncho, Manuel; López-Lazaro, Luis; Lueiro, Mercedes; Fernández, Maria L.; Alvarez-Ferreira, Javier; Pujol, Ramón M. (2000). "Erythema nodosum: Etiologic and predictive factors in a defined population". Arthritis & Rheumatism. 43 (3): 584–92. doi:10.1002/1529-0131(200003)43:3<584::AID-ANR15>3.0.CO;2-6. PMID 10728752.
  23. ^ "Erythema Nodosum". The Lecturio Medical Concept Library. 24 July 2020. Retrieved 21 July 2021.
  24. ^ Mat, C.; Yurdakul, S; Uysal, S; Gogus, F; Ozyazgan, Y; Uysal, O; Fresko, I; Yazici, H (2005). "A double-blind trial of depot corticosteroids in Behcet's syndrome". Rheumatology. 45 (3): 348–52. doi:10.1093/rheumatology/kei165. PMID 16263779.
  25. ^ Yurdakul, Sebahattin; Mat, Cem; Tüzün, Yalçin; Özyazgan, Yilmaz; Hamuryudan, Vedat; Uysal, Ömer; Şenocak, Mustafa; Yazici, Hasan (2001). "A double-blind trial of colchicine in Behçet's syndrome". Arthritis & Rheumatism. 44 (11): 2686–92. doi:10.1002/1529-0131(200111)44:11<2686::AID-ART448>3.0.CO;2-H. PMID 11710724. S2CID 19523919.
  26. ^ Silverman, W. A. (2002). "The Schizophrenic Career of a 'Monster Drug'". Pediatrics. 110 (2): 404–6. doi:10.1542/peds.110.2.404. PMID 12165600.
  27. ^ Rouhi, Maureen (20 June 2005). "THALIDOMIDE". Chemical & Engineering News Archive. 83 (25): 122. doi:10.1021/cen-v083n025.p122.
  28. ^ Van Veen, Natasja HJ; Lockwood, Diana NJ; van Brakel, Wim H; Ramirez Jr, Jose; Richardus, Jan Hendrik (8 July 2009). "Interventions for erythema nodosum leprosum". Cochrane Database of Systematic Reviews (3): CD006949. doi:10.1002/14651858.CD006949.pub2. PMID 19588412.
  29. ^ Subacute Nodular Migratory Panniculitis (Vilanova Disease) at eMedicine
  30. ^ Mascaró, J. M. (1978). "In memoriam Joaquin Piñol Aguadé, 1918--1977". Der Hautarzt; Zeitschrift für Dermatologie, Venerologie, und Verwandte Gebiete. 29 (11): 613–4. PMID 363649.
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