Erythema Nodosum Flashcards
What is erythema nodosum?
A condition where red lumps appear across the patient’s shins.
What is erythema nodosum due to?
Inflammation of subcutaneous fat
What is erythema nodosum due to?
a hypersensitivity reaction
What are the infectious causes of erythema nodosum?
Streptococci
Tuberculosis
What are the systemic causes of erythema nodosum? (MAIN)
Inflammatory bowel disease
Sarcoidosis
What medications can cause erythema nodosum?
Oral contraceptive pill
NSAIDs
How does erythema nodosum present?
Red, inflamed, subcutaneous nodules across both shins.
The nodules are raised and can be painful and tender.
What happens to the nodules on the shins over time?
The nodules settle and appears as bruises.
How long does it take for erythema nodosum to resolve?
About 6 weeks
How is erythema nodosum diagnosed?
clinical presentation
What investigations might be beneficial to diagnose the underlying cause?
- Inflammatory markers (CRP and ESR)
- Throat swab for streptococcal infection
- Chest xray can help identify mycoplasma, tuberculosis, sarcoidosis
- Stool microscopy and culture for campylobacter and salmonella
- Faecal calprotectin for inflammatory bowel disease
What is the initial management of erythema nodosum?
Investigating for an underlying condition and treating the underlying cause
What can be used to help settle the inflammation?
Steroids
How is erythema nodosum mainly managed?
Supportive- Rest and analgesia
