Progressive multifocal leukoencephalopathy (PML) is a rare, life-threatening, infectious, lytic, demyelinating disease that results from reactivation of the virulent JC polyomavirus (JCV) "major opportunistic infection" in immunosuppressed individuals. We reported a case of a young girl who presented with new onset focal neurological defect, evaluated, and laboratory and radiological findings in the context of a clinical setting confirmed HIV-related-PML infection. However, remyelination does not occur, the patients may develop complications in the long term including cognitive impairment, sensory deficits, motor deficits, and disturbances in balance. We must increase our knowledge about HIV- related PML in any patient with reduced immunity and who presented with new onset neurological defect.
Keywords: JC virus; Progressive multifocal; demyelinating disease; leukoencephalopathy.