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Chronic meningococcal meningitis in an infant.

The characteristic presentation of meningococcal meningitis is acute and clinically dramatic. This article describes an infant who presented with a bulging fontanelle and left arm weakness, but no signs of infection. Routine CT scan clearly showed hydrocephalus, but did not reveal the underlying ventriculitis which was subsequently disclosed by contrast enhancement. Subsequent CSF cultures grew Neisseria meningitidis.