A Study to Compare the Use of Fluconazole as Continuous Therapy Versus Periodic Therapy in HIV-Positive Patients With Recurrent Thrush

Inclusion Criteria You may be eligible for this study if you: * Are HIV-positive. * Have a CD4+ cell count less than 150 cells/mm3. * Had at least one episode of thrush in the 24 months before study entry. * Have a life expectancy of at least 12 months. * Weigh at least 88 pounds. * Are 13 years of age or older (consent of parent or guardian required if under 18). * Agree to practice abstinence or use effective methods of birth control during the study. Exclusion Criteria You will not be eligible for this study if you: * Have an allergy to azoles. * Have had 3 episodes or more of thrush within 12 weeks of study entry. * Have a history of esophageal candidiasis. * Have a history of fluconazole-resistant infection. * Have an active opportunistic infection requiring treatment within 14 days before study entry. * Have a fungal infection requiring certain medications. * Have a severe liver disease (e.g., cirrhosis). * Are unable to tolerate oral medications. * Take certain medications. * Are pregnant or breast-feeding.