Chronic Idiopathic Meningitis

ABSTRACT

We report three patients with chronic idiopathic meningitis in whom clinical feature were headache, fever, cranial nerve palsies or CSF showed inflammatory changes. Two patients showed diffuse thickening and enhancement of meninges on CT and MRI, had biopsy-proven intracranial pachymeningitis (diffuse fibrosis with inflammatory cells). In the other patient, MRI and CT showed normal findings. Two patients including one with idiopathic hypertrophic intracranial pachymeningitis improved with corticosteroid and immunosuppressant, while one patient did with lumboperitoneal shunt.