_opportunistic infections in AIDS according to CD4 count:_ *CD4 Count > 500* - Pulmonary TB - Oral candidiasis - Herpes zoster - Kaposi sarcoma - Oral hairy leukoplakia *CD4 Count 200-500* - Extrapulmonary TB - Pneumocystis jirovecii pneumonia (PCP) - Cryptosporidiasis - Primary macular edema (PMLE) *CD4 Count 100-200* - Toxoplasmosis - Histoplasmosis - Esophageal candidiasis - Cryptococcal meningitis - Primary CNS lymphoma - Parasitic diarrhea *CD4 Count < 50* - CMV retinitis - Severe Toxoplasmosis - Mycobacterium avium complex (MAC)