Cryptococcal meningitis in a patient with multiple sclerosis on dimethyl fumarate treatment: A case report.

INTRODUCTION: We present a case of meningitis caused by Cryptococcus neoformans var. grubii in a 46-year old non-HIV-infected patient with multiple sclerosis, treated with dimethyl fumarate monotherapy. We identified no other risk factors for developing cryptococcal meningitis. The patient presented with a slowly progressive headache during preceding weeks and acute onset of confusion, nausea and vomiting. Clinical examination revealed intermittent disorientation without focal neurological symptoms. A lumbar puncture showed an opening pressure of > 50cmH2O. Diagnosis of cryptococcal meningitis was made after culture of Cryptococcus neoformans var. grubii of cerebrospinal fluid. CONCLUSION: This case emphasizes clinicians should bear in mind the possibility of cryptococcal meningitis in patients treated with dimethyl fumarate.