Community-acquired spontaneous acute meningitis by Pseudomonas in adult without risk factors

Community-acquired meningitis by Gram-negative bacilli (GNB) occurs commonly with preexisting conditions such as neurosurgery, neurosurgical devices, trauma, remote source of infection, organ dysfunction, and nosocomial and immunocompromised state, but rarely occurs without these risk factors. Few case reports with Escherichia coli and Pseudomonas aeruginosa that too have some risk factors have been described in literature till now. GNB meningitis is associated with high mortality. There is very little literature available for community-acquired P. aeruginosa meningitis to date in patient without risk factors. Community-acquired spontaneous P. aeruginosa meningitis with pyogenic ventriculitis in a patient without any risk factors in adults is a rare entity and is likely to under-recognized.