The goals of drug therapy are to prevent damage to the immune system by the HIV virus and to halt or delay the progress of the infection to symptomatic disease. These mutations enable the virus to become resistant to previously effective drug therapy. When HIV grows (that is, by reproducing itself), it acquires the ability to change (mutate) its own structure. The symptoms are caused by the complications of AIDS, which include one or more unusual infections or cancers, severe loss of weight, and intellectual deterioration (called dementia). The stage of symptomatic infection, in which the body's immune (or defense) system has been suppressed and complications have developed, is called the acquired immunodeficiency syndrome (AIDS). The stage of chronic asymptomatic infection (meaning a long duration of infection without symptoms) lasts an average of eight to 10 years without treatment. The initial stage of infection (primary infection), which occurs within weeks of acquiring the virus, often is characterized by the flu- or mono-like illness that generally resolves within weeks. Three stages of HIV infection have been described. HIV infection is generally a slowly progressive disease in which the virus is present throughout the body at all stages of the disease. The human immunodeficiency virus (HIV) is a type of virus called a retrovirus, which can infect humans when it comes in contact with tissues that line the vagina, anal area, mouth, or eyes, or through a break in the skin. HIV (human immunodeficiency virus) infection left untreated causes AIDS (acquired immunodeficiency syndrome). They can be temporary or persist over the long term, depending upon the exact type of hallucinations and their cause. Hallucinations can accompany other psychotic symptoms such as delusions and disconnection from reality. High fevers can also produce hallucinations in some people. People who are seriously ill, such as those with liver failure or kidney failure, can experience hallucinations. This occurs with a number of different drugs.
Hallucinations can be a feature of psychotic disorders such as schizophrenia and are also very common in drug-induced states and in drug withdrawal. Examples include seeing things that are not there, hearing voices or other sounds, experiencing body sensations like crawling feelings on the skin, or smelling odors that are not there. Hallucinations are sensations that appear to be real but are created within the mind.
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