Acquired immunodeficiency syndrome (AIDS) is a chronic, potentially life-threatening condition caused by the human immunodeficiency virus (HIV). By damaging your immune system, HIV interferes with your body's ability to fight the organisms that cause disease.They might also experience the following stage 3 HIV symptoms: nausea. vomiting. persistent diarrhea. chronic fatigue. rapid weight loss. cough and shortness of breath. recurring fever, chills, and night sweats. rashes, sores, or lesions in the mouth or nose, on the genitals, or under the skin.
