Herpes is a virus. It normally hides itself inside the body s nerve endings. However, under some circumstances, the virus will move to the surface of the skin and cause a type of eruption. In a person with HIV disease, eruptions can occur on different parts of the body. These sores can be very painful, but there is a medication that must be given at the first sign of an eruption that can reduce the effects.
Tuberculosis is a disease usually found in the lungs.
It is caused by bacteria that nestle in the smallest air pockets of the lungs. In healthy people, the body detects these bacteria and releases a coating that covers the bacteria in the lungs and prevents them from reproducing. For individuals with HIV infection and a lowered immune system, the body does not produce the coating and as the bacteria spread over larger surfaces of the lung, the person is not able to take in oxygen from the air. Unless something is done, the person will suffocate. These medicines not only protect the person carrying the bacteria but also prevent the bacteria from being transmitted to another person.