[HIV patients with psychiatric illnesses. Treatment strategies and drug interactions].

Since the beginning of the endemic phase of the human immunodeficiency virus (HIV), about 60,000 humans have been infected in Germany by this retrovirus. Epidemiological data indicate approximately 2,500 new infections annually. Due to the multiagent antiviral therapy available, only about 600 cases progressed to the clinical picture of full-blown acquired immunodeficiency syndrome (AIDS) in 1999. [Robert-Koch-Institut (Berlin), http://www.rki.de] If an HIV infection or AIDS is current, a higher prevalence of psychiatric disorders in these persons can be anticipated. Psychoactive drugs and their dosages need to be chosen under several considerations and with regard to the HIV infection, since interactions between antiviral and psychotropic drugs occur frequently. The use of psychotropic drugs is often required and thus cannot be ignored. Therefore, psychiatric disorders, medical treatment strategies, interactions between psychotropic and antiretroviral drugs, and biotransformation mechanisms are discussed with regard to an underlying HIV infection.