[An unusual cause of fever: chronic meningococcemia].

In a 14-year old boy admitted because of fever of unknown origin chronic meningococcaemia was diagnosed. He had suffered for the last four months from periods of high fever accompanied by skin rash and arthralgia. Blood culture showed the presence of Neisseria meningitidis. Cerebrospinal fluid culture remained negative. Following the administration of high-dose intravenous benzylpenicillin a prompt resolution of all signs and symptoms was observed. No immunological abnormalities were found. Chronic meningococcaemia can be a--nowadays uncommon--cause of fever of unknown origin.