Erythema nodosum
Overview
Causes
- inflammation of subcutaneous fat
- typically causes tender, erythematous, nodular lesions
- usually occurs over shins, may also occur elsewhere (e.g. forearms, thighs)
- usually resolves within 6 weeks
- lesions heal without scarring
Causes
- infection: streptococci, TB, brucellosis
- systemic disease: sarcoidosis, inflammatory bowel disease, Behcet's
- malignancy/lymphoma
- drugs: penicillins, sulphonamides, combined oral contraceptive pill
- pregnancy
 | |
| © Image used on license from DermNet NZ | |
 | |
| © Image used on license from DermNet NZ and with the kind permission of Prof Raimo Suhonen | |