| 1. | About 15 percent of patients with inflammatory bowel disease develop erythema nodosum.
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| 2. | Erythema nodosum may occur concurrently with fever, malaise, and joint pain and inflammation.
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| 3. | Additional evaluation should be performed to determine the underlying cause of erythema nodosum.
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| 4. | Occasional cases of erythema nodosum and erythema multiforme have been reported.
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| 5. | Immune complications include acute glomerulonephritis, rheumatic fever, and erythema nodosum.
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| 6. | The ESR is initially very high, and falls as the nodules of erythema nodosum.
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| 7. | The most common lesions are erythema nodosum, plaques, maculopapular eruptions, subcutaneous nodules, and lupus pernio.
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| 8. | Additionally, patients may present with erythema nodosum, cutaneous pustular vasculitis, and lesions similar to pyoderma gangrenosum.
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| 9. | Erythema nodosum is due to inflammation of the underlying subcutaneous tissue, and is characterized by septal panniculitis.
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| 10. | In sarcoidosis presenting in the Caucasian population, hilar adenopathy and erythema nodosum are the most common initial symptoms.
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