From Federal Health Reporting, booklet 31 "HIV and AIDS":
According to the European case-definition, AIDS refers to a defined group of illnesses that are characteristic of a progressive phase of the chronic HIV infection. The gradual destruction of the immune system results in particular life-threatening opportunistic infections and malignant tumours. Opportunistic infections refer to both newly acquired and/or reactivated infectious diseases resulting from pathogens that are widespread in the natural environment and that pose no danger for the intact immune system. Among the most frequent of these infections are: Pneumocystis Pneumonia (PcP) (pneumonia via the pathogen Pneumocystis jiroveci, previously: carinii), oesophageal candidiasis (inflammation of the esophagus via the fungus Candida albicans), and cerebral toxoplasmosis (abscesses in the brain caused by Toxoplasma gondii).
Malignant tumours include Kaposi's sarcoma (proliferations of blood-vessel cells on the skin and inner organs), B-cell Lymphoma (malignant proliferation of the B-cells of the lymph nodes, of the defence cells of the specific immune system), as well as Human Papilloma Virus (HPV) associated cervical and anal carcinomas (malignant carcinoma of the cervix, or the outside of the anus or anal canal).
Effects to the central nervous system (HIVencephalopathy) can lead to mental, vegetative, and motor failures. Wasting syndrome, and HIVdependent weight loss of more than 10% of one's body weight, associated with chronic diarrhoea or weakness and fever (HIV cachexia), can be life threatening, particularly in conjunction with other diseases.
Without therapeutic intervention, HIV disease leads to death.
The Federal Health Monitoring System 23 Jan 2022