Symptoms can be in the form of any single or multiple system involvement.
Infection occurs which either does not respond to routine treatment because of resistant strains or, if it responds, it does so after a long time only to recur. Such repeated infections debilitate the body leading to death. The drugs too, often produce rare reactions in AIDS patients not commonly seen otherwise. Some of the commonly encountered symptoms in HIV positive patients would be as follows. There are a few conditions, which were extremely rare till now, the occurrence of which almost confirms AIDS and are called markers.