Relapse Pneumocystis carinii pneumonitis and adverse reaction to current therapy in patients with AIDS: trimetrexate as an alternative.

: This is a case report of a 31-yr-old homosexual male with AIDS, admitted to our clinic with a relapse P. carinii pneumonitis (PCP) and a previous history of severe adverse reactions to currently used therapy. He was treated successfully with trimetrexate (TMTX), a dihydrofolate reductase inhibitor combined with leucovorin rescue. Adverse reactions, current therapy and prophylaxis of PCP in AIDS are discussed.