for Veterans and the Public
Common types of illnesses
Opportunistic infections (or OIs) can be caused by viruses, bacteria, fungus, even parasites. Common opportunistic infections that are covered in this tutorial are:
- Candidiasis (thrush)
- Coccidioidomycosis
- Cryptococcosis
- Cryptosporidiosis
- Cytomegalovirus
- Herpes simplex
- Herpes zoster (shingles)
- Histoplasmosis
- HIV dementia
- HIV wasting syndrome
- Isosporiasis
- MAC
- PCP
- Pneumonia
- PML
- Salmonella
- Toxoplasmosis
- Tuberculosis
AIDS-related cancers include:
What follows are descriptions of some of these illnesses.

