Candidiasis is a fungal infection caused by Candida albicans that commonly affects people with HIV/AIDS. In AIDS patients with very low CD4 counts below 100, candidiasis can be difficult to treat and recurrent. Treatment depends on the site of infection and includes topical antifungal creams, ointments, and oral or vaginal suppositories for mild to moderate infections as well as systemic antifungal medications like fluconazole, ketokonazole, and amphotericin B for more severe esophageal or systemic candidiasis.