A 32 year old HIV positive intravenous drug user (IVDU) with a promiscuous lifestyle in the past presented with altered behaviour and was diagnosed to have pulmonary tuberculosis, tuberculous meningitis and tuberculous osteomyelitis. After initial response to anti-tuberculous therapy, his symptoms recurred with the appearance of cerebral mass lesions. A presumptive diagnosis of toxoplasma encephalitis was made based on clinical, serological and radiological evidence. He showed clinical improGement with anti-toxoplasmic therapy.