The wide clinical spectrum of polyarteritis nodosa with cutaneous involvement*

In order to assess the extent of systemic disease which may accompany polyarteritis nodosa when it involves the skin, fourteen cases of polyarteritis nodosa have been reviewed in whom there was histologically proven cutaneous involvement. It is concluded that a sub‐group of polyarteritis nodosa (in which the disease remains limited to the skin, muscles and peripheral nerves) can not necessarily be identified; however, predominant cutaneous involvement suggests a good prognosis.