Toxoplasmosis is caused by infection with the obligate intracellular parasite Toxoplasma gondii. Toxoplasmosis is generally a late complication of HIV infection and usually occurs in patients with CD4 + T-cell counts below 200/μl. Co-trimoxazole (trimethoprim plus sulfamethoxazole) is the most common drug used in India for the treatment of AIDS-associated cerebral toxoplasmosis. Other alternative drugs used for the treatment of cerebral toxoplasmosis are clindamycin plus pyrimethamine and clarithromycin with pyrimethamine. A 30-year-old male known case of retroviral disease presented to Kasturba Medical College, India, with complaints of fever, headache and vomiting. Computed tomography scan of his brain showed irregular ring enhancing lesion in the right basal ganglia. Toxoplasma serology revealed raised IgG antibody levels. Based on the CT features and serology, diagnosis of cerebral toxoplasmosis was made. He was treated with clindamycin alone as he had history of sulfonamide allergy. The patient was symptomatically better after 48 hours. After 21 days, repeat CT of brain was done which was normal. The patient showed good clinical improvement within 48 hours and the lesion resolved completely within 3 weeks. The authors recommend using clindamycin without pyrimethamine in resource poor settings and in patients who do not tolerate sulfa drugs.

Toxoplasmosis is caused by infection with the obligate intracellular parasite Toxoplasma gondii. Toxoplasmosis is generally a late complication of HIV infection and usually occurs in patients with CD4 + T-cell counts below 200/μl. Co-trimoxazole (trimethoprim plus sulfamethoxazole) is the most c...