Thursday, May 16, 2013

Clinical Sign : Erythema Nodosum

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1- What is the name of ths sign ?

Erythema nodosum

2- What are the causes ?

- In about 30-50% of cases, the cause of EN is unknown
- infectious : Hep C , TB , Leprosy , Strepto , M.pneumonia , EPV , Yersinia , coccidiodis immitis

- autoimmune : IBD , Bachet
- sacroidosis , pregnancy , cancer
- medication ( sulfonamides , oral contraceptives, bromides ) & vaccination .

Mnemonics :  SORE SHINS
(Streptococci, OCP , Rickettsia , Eponymous (Bechet) , Sulfonamides , Hansen's Disease (Leprosy), IBD , NHL , Sarcoidosis.



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