Erythema nodosum: Difference between revisions
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+ | == Background == |
+ | === Pathophysiology === |
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+ | * Delayed hypersensitivity reaction causing a septal panniculitis without vasculitis |
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+ | == Clinical Manifestations == |
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+ | * Erythematous, tender nodules on the shins |
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+ | ==Differential Diagnosis== |
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− | * Inflammatory bowel disease |
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− | * |
+ | *[[Inflammatory bowel disease]] |
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+ | **[[Whipple disease]] |
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[[Category:Clinical exam]] |
[[Category:Clinical exam]] |
Latest revision as of 16:09, 2 August 2020
Background
Pathophysiology
- Delayed hypersensitivity reaction causing a septal panniculitis without vasculitis
Clinical Manifestations
- Erythematous, tender nodules on the shins
Differential Diagnosis
- Infections
- Bacterial
- Streptococcal infection (the most common infectious cause)
- Tuberculosis
- Leprosy
- Yersinia, Salmonella, Campylobacter gastroenteritis
- Mycoplasma pneumoniae
- Tularemia
- Leptospirosis
- Brucellosis
- Chlamydia trachomatis
- Psittacosis
- Lymphogranuloma venereum
- Cat-scratch disease
- Fungal
- Viral
- Bacterial
- Drugs
- Inflammatory bowel disease
- Crohn disease (more often than ulcerative colitis)
- Ulcerative colitis
- Malignancy
- Lymphoma (Hodgkin, most often)
- Leukemia (acute myelogenous, most often)
- Internal carcinomas
- Miscellaneous