Drug-to-drug interaction between dapsone and minocycline: An unusual cause of relapse of toxoplasmic encephalitis in an HIV-infected patient

HIV-infected patients with opportunistic infections receive therapeutic regimens that often contain numerous drugs and are then exposed to potential drug-to-drug interactions. We report here an unusual case of relapse of toxoplasmic encephalitis in an HIV-infected patient, possibly due to a drug-to-drug interaction between dapsone and minocycline.