Erythema nodosum
Definition
Erythema nodosum is an inflammatory disorder that is characterized by tender, red nodules under the skin.
Overview, Causes, & Risk Factors
In about half of cases, the exact cause of erythema nodosum is unknown. Some cases may be associated with the following: - Infections. Some of the more common ones are:
- Pregnancy
- Sensitivity to certain medications, including:
- Amoxicillin and other penicillins
- Sulfonamides
- Sulfones
- Oral contraceptives
- Other antibiotics
- Progestin
Other associated disorders include leukemia, lymphoma, sarcoidosis, rheumatic fever, Bechet's disease, and ulcerative colitis. The condition is more common in women than it is in men.
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