Many possibilities: The causes of a rash on the lower legs are almost endless. A picture would be beneficial in helping create a differential of possible causes. Sometimes, a biopsy is needed to identify the rash. Even then, although we can classify and treat the rash, we sometimes don't know exactly what caused it.
Answered 12/16/2017
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2 doctors weighed in across 2 answers
A doctor has provided 1 answer
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