Difference between revisions of "Non-malignant skin disease"

Non-malignant skin disease (view source)

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 ===Erythema nodosum===
-Features:<ref name=Ref_PBoD8_1199>{{Ref PBoD8|1199}}</ref>
+*Most common from of panniculitis.<ref name=pmid17375516>{{Cite journal  | last1 = Schwartz | first1 = RA. | last2 = Nervi | first2 = SJ. | title = Erythema nodosum: a sign of systemic disease. | journal = Am Fam Physician | volume = 75 | issue = 5 | pages = 695-700 | month = Mar | year = 2007 | doi =  | PMID = 17375516 | URL = http://www.aafp.org/afp/2007/0301/p695.html }}</ref>
-*Common.
-*Assoc. with [[IBD]].
+Causes - mnemonic ''NODOSUM'':<ref name=pmid17375516/>
+*'''NO''' cause (idiopathic) ~ 55% of cases.
+*'''D'''rugs (sulfonamides, amoxicillin, oral contraceptives) ~ 5% of cases.
+*'''O'''ther infections - group A streptococci (streptococcal pharyngitis), Yersinia, chlamydia, mycobacteria, others ~ 30% of cases.
+*[[sarcoidosis|'''S'''arcoidosis]] ~ 7% of cases.
+*[[ulcerative colitis|'''U'''lcerative colitis]] & [[Crohn's disease]] ~ 2% of cases.
+*'''M'''alignancy ([[leukemia]], [[Hodgkin's lymphoma]]) ~ 1% of cases
 ====Microscopic====
 Features:<ref name=Ref_PBoD8_1199>{{Ref PBoD8|1199}}</ref>
 *Expanded (inter-adipocyte cluster) septa.
-*Neutrophils.
+*[[Neutrophil]]s.
 *Fibrin.
 Notes:
-*No vasculitis.
+*No [[vasculitis]].
 ===Erythema induratum===
 Features:<ref name=Ref_PBoD8_1199>{{Ref PBoD8|1199}}</ref>