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Doctors' Answers to "Frequently Asked Questions" - Erthyma nodosum
Answer: An arthritis specialist would take care of these. In general, you need tests for TB(skin test), sarcoidosis(blood test), drug causes(birth control pills, penicillins,sulfa antibiotics,,Inflammatory Bowel Disease(gi doctor to do a scope or a gi series),there is a type seen with leprosy-but you'd know if you had this. The treatment is episodic steroids and about 1/2 the time the cause is not known.
Answer: Erythma nodosum iss a eruption of tender/painful nodules-usually on the lower legs. Drugs or infections are common causes-especially birth control pills. The mechanism of action is not known. Penicillins and Sulfa based drugs are also common culprits-Augmentin would belong to this class(at least one half of the drug). It is also seen in sarcoidosis, leprosy, TB, and several other infections. Ensure your TB skin test has been done, this would be the only common one. But, sounds like Augmentin would be the first suspect.
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