Despite improvement of life expectancy of human immunodeficiency virus (HIV) infected people since the implementation of antiretroviral treatment, psychological suffering prevails and needs to be considered as part of the treatment to guarantee its efficiency. Mental disorders and social stigmatization substantially affect patients' quality of life and their adherence to treatment. The article details the benefits of a routine screening for mental disorders within this population, who is often reluctant to consult psychiatric services. The different treatments provided by the Geneva University Hospital (HUG) are introduced. A clinical case report illustrates the relevance of a multidisciplinary care program and the role of the liaison psychiatry in this field.