[Erysipel at the lower leg combined with a peripheral peroneus nerve palsy--an unusual occurrence].

We present the clinical case of a fifty-year-old man who presented two times with a foot elevator paresis and an erysipel first on the right and after two months on the left side. Afterwards, we carried out a thorough case history with the help of clinical, radiological and magnetic resonance imaging. Even so the clinical pathology of the foot elevator paresis could not be manifested. A compartment syndrome could be discounted. In the context of the second stay during a neurology examination on both legs electromyography was performed and the nerve speed was tested. A peripheral peroneus paresis of unknown level and of unknown aetiology was demonstrated. The erysipel regressed rapidly under intravenous ampicillin antibiotics while the peroneus paresis was unchanged. The patent was released with a peroneus splint on both sides. With this case report we would like to point out the causes of peripheral peroneus paresis with regard to an additional erysipel. This case report is discussed regarding the possible aetiopathology and the current literature.