01112nas a2200241   4500000000100000008004100001260001300042653002500055653001200080653002800092653002100120653001100141653001200152653001400164653001700178100001900195700001400214245003200228300001100260490000700271520057800278022001400856       1978                            d  c1978 Jun10aBacterial Infections10aColitis10aDiagnosis, Differential10aErythema Nodosum10aHumans10aleprosy10aPrognosis10aTuberculosis1 aSoderstrom R M1 aKrull E A00aErythema nodosum. A review.  a806-100 v213 a<p>Erythema nodosum is not an uncommon dermatologic entity. Sarcoidosis and streptococcal infection have become the two most common causes, while tuberculosis was the predominant etiology prior to the use of isoniazid. Histoplasmosis and coccidioidomycosis are two important geographic considerations. Laboratory tests should include a PPD test, chest x-ray, throat culture for beta-streptococcus, and ASO titer determination as a minimum. Symptomatic treatment remains unsatisfactory in many cases, although recent success has been reported with oral potassium iodide.</p>  a0011-4162